<?xml version="1.0" encoding="utf-8"?>
<?taxonomy-generator id="PomdocPro" version="2021.1.1.1" date="2026-02-26 21:13:58"?>
<linkbase 
  xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"
>
  <arcroleRef
    arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
    xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"
    xlink:type="simple"
  />
  <arcroleRef
    arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"
    xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"
    xlink:type="simple"
  />
  <arcroleRef
    arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"
    xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"
    xlink:type="simple"
  />
  <arcroleRef
    arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"
    xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"
    xlink:type="simple"
  />
  <arcroleRef
    arcroleURI="http://xbrl.org/int/dim/arcrole/all"
    xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"
    xlink:type="simple"
  />
  <arcroleRef
    arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
    xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower"
    xlink:type="simple"
  />
  <roleRef
    roleURI="https://www.econocom.com/role/StatementOfChangesInEquity"
    xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#StatementOfChangesInEquity"
    xlink:type="simple"
  />
  <roleRef
    roleURI="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999"
    xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_role-999999"
    xlink:type="simple"
  />
  <roleRef
    roleURI="https://www.econocom.com/role/Anchoring"
    xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#Anchoring"
    xlink:type="simple"
  />
  <definitionLink xlink:role="https://www.econocom.com/role/StatementOfChangesInEquity" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityAbstract"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <definitionArc xbrldt:closed="true" xlink:type="arc" xbrldt:contextElement="scenario" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:to="ifrs-full_StatementOfChangesInEquityTable" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ComponentsOfEquityAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:to="ifrs-full_ComponentsOfEquityAxis" xlink:from="ifrs-full_StatementOfChangesInEquityTable" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ComponentsOfEquityDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:to="ifrs-full_ComponentsOfEquityDomain" xlink:from="ifrs-full_ComponentsOfEquityAxis" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:from="ifrs-full_ComponentsOfEquityDomain" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IssuedCapitalMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssuedCapitalMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IssuedCapitalMember" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_SharePremiumMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SharePremiumMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_SharePremiumMember" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TreasurySharesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TreasurySharesMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_TreasurySharesMember" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" order="3"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RetainedEarningsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarningsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_RetainedEarningsMember" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" order="4"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherReservesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherReservesMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherReservesMember" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" order="5"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncomeMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:from="ifrs-full_OtherReservesMember" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncontrollingInterestsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncontrollingInterestsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncontrollingInterestsMember" xlink:from="ifrs-full_ComponentsOfEquityDomain" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:to="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:from="ifrs-full_StatementOfChangesInEquityTable" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RestatedMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RestatedMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:to="ifrs-full_RestatedMember" xlink:from="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember" xlink:from="ifrs-full_RestatedMember" order="1"/>
    <loc xlink:type="locator" xlink:label="econocom_AfterChangesInAccountingPolicyRequiredByIFRSsMember" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AfterChangesInAccountingPolicyRequiredByIFRSsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="econocom_AfterChangesInAccountingPolicyRequiredByIFRSsMember" xlink:from="ifrs-full_RestatedMember" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_StatementOfChangesInEquityLineItems" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NumberOfSharesIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NumberOfSharesIssued"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NumberOfSharesIssued" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="2"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_Equity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Equity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_Equity" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="3"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLoss"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLoss" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="4"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncome" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="5"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ComprehensiveIncome" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="6"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="7"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsPaid" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaid"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsPaid" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="8"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="10"/>
    <loc xlink:type="locator" xlink:label="econocom_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="econocom_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="11"/>
    <loc xlink:type="locator" xlink:label="econocom_PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="econocom_PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="12"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" order="13"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IssueOfEquity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssueOfEquity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IssueOfEquity" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" order="14.0"/>
    <loc xlink:type="locator" xlink:label="PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" order="15.0"/>
  </definitionLink>
  <definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"/>
    <loc xlink:type="locator" xlink:label="esef_cor_LineItemsNotDimensionallyQualified" xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualified"/>
    <definitionArc xbrldt:closed="true" xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="scenario" xlink:to="esef_cor_LineItemsNotDimensionallyQualified" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="1.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="2.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RevenueFromContractsWithCustomers" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RevenueFromContractsWithCustomers"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_RevenueFromContractsWithCustomers" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="3.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CostOfSales" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CostOfSales"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CostOfSales" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="4.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EmployeeBenefitsExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EmployeeBenefitsExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_EmployeeBenefitsExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="5.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ServicesExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ServicesExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ServicesExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="6.0"/>
    <loc xlink:type="locator" xlink:label="AmortisationAndProvisions" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AmortisationAndProvisions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AmortisationAndProvisions" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="7.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="8.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TaxExpenseOtherThanIncomeTaxExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="9.0"/>
    <loc xlink:type="locator" xlink:label="FinancialIncomeFromOperatingActivities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_FinancialIncomeFromOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="FinancialIncomeFromOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="10.0"/>
    <loc xlink:type="locator" xlink:label="FinancialExpensesFromOperatingActivities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_FinancialExpensesFromOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="FinancialExpensesFromOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="11.0"/>
    <loc xlink:type="locator" xlink:label="ProfitLossFromOrdinaryOperatingActivities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ProfitLossFromOrdinaryOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ProfitLossFromOrdinaryOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="12.0"/>
    <loc xlink:type="locator" xlink:label="AmortisationOfIntangibleAssetsFromAcquisitions" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AmortisationOfIntangibleAssetsFromAcquisitions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AmortisationOfIntangibleAssetsFromAcquisitions" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="13.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_MiscellaneousOtherOperatingIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_MiscellaneousOtherOperatingIncome" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="14.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_MiscellaneousOtherOperatingExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="15.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossFromOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="16.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_FinanceIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_FinanceIncome" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="17.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_FinanceCosts" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_FinanceCosts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="18.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossBeforeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossBeforeTax" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="19.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="20.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossFromContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossFromContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossFromContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="22.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossFromDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossFromDiscontinuedOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossFromDiscontinuedOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="23.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="24.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="25.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_BasicEarningsLossPerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BasicEarningsLossPerShare"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_BasicEarningsLossPerShare" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="26.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BasicEarningsLossPerShareFromContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="27.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="28.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DilutedEarningsLossPerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DilutedEarningsLossPerShare"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DilutedEarningsLossPerShare" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="29.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="30.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="31.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="33.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="34.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="35.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="36.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="37.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="38.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="39.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="40.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="41.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="42.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_Goodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Goodwill"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_Goodwill" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="43.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PropertyPlantAndEquipment" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="44.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RightofuseAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_RightofuseAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="45.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentFinancialAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentFinancialAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="46.0"/>
    <loc xlink:type="locator" xlink:label="NoncurrentResidualIinterestInLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NoncurrentResidualIinterestInLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="NoncurrentResidualIinterestInLeasedAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="47.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherNoncurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentReceivables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherNoncurrentReceivables" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="48.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DeferredTaxAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DeferredTaxAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DeferredTaxAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="49.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="50.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_Inventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Inventories"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_Inventories" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="51.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_TradeAndOtherCurrentReceivables" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="52.0"/>
    <loc xlink:type="locator" xlink:label="CurrentResidualIinterestInLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_CurrentResidualIinterestInLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CurrentResidualIinterestInLeasedAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="53.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentTaxAssetsCurrent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentTaxAssetsCurrent"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentTaxAssetsCurrent" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="54.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="55.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherCurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherCurrentAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="56.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashAndCashEquivalents" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="57.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="58.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="59.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_Assets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Assets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_Assets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="60.0"/>
    <loc xlink:type="locator" xlink:label="SelfFundedOutstandingRentalsAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_SelfFundedOutstandingRentalsAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="SelfFundedOutstandingRentalsAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="61.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IssuedCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssuedCapital"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IssuedCapital" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="62.0"/>
    <loc xlink:type="locator" xlink:label="AdditionalPaidinCapitalAndReserves" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AdditionalPaidinCapitalAndReserves"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdditionalPaidinCapitalAndReserves" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="63.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarningsProfitLossForReportingPeriod"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="64.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_EquityAttributableToOwnersOfParent" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="65.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncontrollingInterests"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncontrollingInterests" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="66.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="67.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentFinancialLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentFinancialLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="68.0"/>
    <loc xlink:type="locator" xlink:label="NoncurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NoncurrentGrossLiabilityForPurchasesOfLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="NoncurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="69.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentLeaseLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="70.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentFinancialLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="71.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherLongtermProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherLongtermProvisions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherLongtermProvisions" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="72.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentProvisionsForEmployeeBenefits" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentProvisionsForEmployeeBenefits"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentProvisionsForEmployeeBenefits" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="73.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherNoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherNoncurrentLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="74.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DeferredTaxLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DeferredTaxLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="75.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="76.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="77.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentFinancialLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentFinancialLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="78.0"/>
    <loc xlink:type="locator" xlink:label="CurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_CurrentGrossLiabilityForPurchasesOfLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="79.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentLeaseLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="80.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherCurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentFinancialLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherCurrentFinancialLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="81.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentProvisions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentProvisions" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="82.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="83.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TradeAndOtherCurrentPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_TradeAndOtherCurrentPayables" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="84.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentContractLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentContractLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentContractLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="85.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherCurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherCurrentLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="86.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="87.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="88.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EquityAndLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EquityAndLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_EquityAndLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="89.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NetDebt" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NetDebt"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NetDebt" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="90.0"/>
    <loc xlink:type="locator" xlink:label="SelfFundedOutstandingRentalsLiabilities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_SelfFundedOutstandingRentalsLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="SelfFundedOutstandingRentalsLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="91.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="92.0"/>
    <loc xlink:type="locator" xlink:label="ProvisionsDepreciationAmortisationAndImpairment" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ProvisionsDepreciationAmortisationAndImpairment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ProvisionsDepreciationAmortisationAndImpairment" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="93.0"/>
    <loc xlink:type="locator" xlink:label="EliminationOfTheImpactOfResidualInterestOnLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_EliminationOfTheImpactOfResidualInterestOnLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="EliminationOfTheImpactOfResidualInterestOnLeasedAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="94.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherAdjustmentsForNoncashItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherAdjustmentsForNoncashItems"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherAdjustmentsForNoncashItems" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="95.0"/>
    <loc xlink:type="locator" xlink:label="CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="96.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="97.0"/>
    <loc xlink:type="locator" xlink:label="AdjustementsForCostOfNetDebt" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AdjustementsForCostOfNetDebt"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustementsForCostOfNetDebt" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="98.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="99.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="100.0"/>
    <loc xlink:type="locator" xlink:label="InvestmentsInSelfFundedTMFContracts" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_InvestmentsInSelfFundedTMFContracts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="InvestmentsInSelfFundedTMFContracts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="101.0"/>
    <loc xlink:type="locator" xlink:label="OtherChangesInWorkingCapitalRequirement" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_OtherChangesInWorkingCapitalRequirement"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="OtherChangesInWorkingCapitalRequirement" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="102.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="103.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivitiesContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="104.0"/>
    <loc xlink:type="locator" xlink:label="PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="105.0"/>
    <loc xlink:type="locator" xlink:label="ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="106.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="107.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="108.0"/>
    <loc xlink:type="locator" xlink:label="AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="109.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="110.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="114.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="115.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="116.0"/>
    <loc xlink:type="locator" xlink:label="ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="117.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="118.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="119.0"/>
    <loc xlink:type="locator" xlink:label="ChangesFactoringLiabilitiesandReverseFactoringLiabilities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ChangesFactoringLiabilitiesandReverseFactoringLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ChangesFactoringLiabilitiesandReverseFactoringLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="120.0"/>
    <loc xlink:type="locator" xlink:label="NetChangeInCommercialPaper" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NetChangeInCommercialPaper"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="NetChangeInCommercialPaper" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="121.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="122.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="123.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="124.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="125.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="126.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="127.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="128.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="129.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="130.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="131.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="133.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="134.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="135.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="136.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="137.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_StatementOfIFRSCompliance" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfIFRSCompliance"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_StatementOfIFRSCompliance" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="140.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PrincipalPlaceOfBusiness" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PrincipalPlaceOfBusiness"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PrincipalPlaceOfBusiness" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="141.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DomicileOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DomicileOfEntity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DomicileOfEntity" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="142.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="143.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CountryOfIncorporation" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CountryOfIncorporation"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CountryOfIncorporation" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="144.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="145.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NameOfParentEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NameOfParentEntity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NameOfParentEntity" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="146.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NameOfUltimateParentOfGroup" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NameOfUltimateParentOfGroup"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NameOfUltimateParentOfGroup" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="147.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_LegalFormOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LegalFormOfEntity"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_LegalFormOfEntity" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="148.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="149.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="150.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="151.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="152.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfIssuedCapitalExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfIssuedCapitalExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfIssuedCapitalExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="153.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="154.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="155.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="156.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="157.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="158.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="159.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="160.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCompositionOfGroupExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCompositionOfGroupExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCompositionOfGroupExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="161.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="162.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="163.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfGovernmentGrantsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGovernmentGrantsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfGovernmentGrantsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="164.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDefinedContributionPlansExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDefinedContributionPlansExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDefinedContributionPlansExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="165.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="166.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDeferredTaxesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="167.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="168.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="169.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="170.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="171.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="172.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="173.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="174.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="175.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="176.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinanceIncomeExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="177.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfBorrowingCostsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBorrowingCostsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfBorrowingCostsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="178.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="179.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="180.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="181.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="182.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="183.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="184.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="185.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="186.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="187.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="188.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfExpensesByNatureExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfExpensesByNatureExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfExpensesByNatureExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="189.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="190.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="191.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="192.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinanceCostExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinanceCostExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinanceCostExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="193.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="194.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="195.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="196.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="197.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="198.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="199.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfLeasesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfLeasesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="200.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="201.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="202.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfProvisionsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfProvisionsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="203.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="204.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="205.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="206.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="207.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="208.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="209.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBorrowingsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="210.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfTreasurySharesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTreasurySharesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfTreasurySharesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="211.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="212.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="213.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="214.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="215.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="216.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfIncomeTaxExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="217.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="218.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDividendsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDividendsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDividendsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="219.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="221.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="222.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="223.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="224.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="225.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfLiquidityRiskExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfLiquidityRiskExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfLiquidityRiskExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="226.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="227.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="228.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="229.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="230.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="231.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCashFlowStatementExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCashFlowStatementExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCashFlowStatementExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="232.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="233.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="234.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="235.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="236.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfContingentLiabilitiesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="237.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDeferredIncomeExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDeferredIncomeExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDeferredIncomeExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="238.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="239.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="240.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="241.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfJointVenturesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfJointVenturesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfJointVenturesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="242.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCostOfSalesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCostOfSalesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCostOfSalesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="243.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="244.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="245.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="246.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInventoriesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfInventoriesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="247.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="248.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="249.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="250.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDiscontinuedOperationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDiscontinuedOperationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDiscontinuedOperationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="251.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="252.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="253.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="254.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="255.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="256.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="257.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="258.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfOtherAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfOtherAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfOtherAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="259.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRevenueExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfRevenueExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="260.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="261.0"/>
    <loc xlink:type="locator" xlink:label="esef_cor_NotesAccountingPoliciesAndMandatoryTags" xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_cor_NotesAccountingPoliciesAndMandatoryTags"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="esef_cor_NotesAccountingPoliciesAndMandatoryTags" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="262.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="263.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="264.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfMarketRiskExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfMarketRiskExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfMarketRiskExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="265.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="266.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfCreditRiskExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCreditRiskExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfCreditRiskExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="267.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="269.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromExerciseOfOptions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProceedsFromExerciseOfOptions" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="270.0"/>
    <loc xlink:type="locator" xlink:label="Schuldschein2025Repayment" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_Schuldschein2025Borrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="Schuldschein2025Repayment" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="271.0"/>
    <loc xlink:type="locator" xlink:label="Schuldschein2022Repayment" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_Schuldschein2022Repayment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="Schuldschein2022Repayment" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="272.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfReclassificationsOrChangesInPresentationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfReclassificationsOrChangesInPresentationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfReclassificationsOrChangesInPresentationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="273.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="274.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="275.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="276.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBasisOfConsolidationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="277.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="278.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="279.0"/>
  </definitionLink>
  <definitionLink xlink:role="https://www.econocom.com/role/Anchoring" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="ifrs-full_DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease"/>
    <loc xlink:type="locator" xlink:label="econb_NoncurrentResidualIinterestInLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NoncurrentResidualIinterestInLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_NoncurrentResidualIinterestInLeasedAssets" xlink:from="ifrs-full_DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_CurrentResidualIinterestInLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_CurrentResidualIinterestInLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_CurrentResidualIinterestInLeasedAssets" xlink:from="ifrs-full_DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <loc xlink:type="locator" xlink:label="econb_SelfFundedOutstandingRentalsAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_SelfFundedOutstandingRentalsAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_SelfFundedOutstandingRentalsAssets" xlink:from="ifrs-full_TradeAndOtherCurrentReceivables" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_SelfFundedOutstandingRentalsAssets_1" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_SelfFundedOutstandingRentalsAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_SelfFundedOutstandingRentalsAssets_1" xlink:from="ifrs-full_TradeAndOtherCurrentReceivables" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <loc xlink:type="locator" xlink:label="econb_AdditionalPaidinCapitalAndReserves" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AdditionalPaidinCapitalAndReserves"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_AdditionalPaidinCapitalAndReserves" xlink:from="ifrs-full_EquityAttributableToOwnersOfParent" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_SharePremium" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SharePremium"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_SharePremium" xlink:from="econb_AdditionalPaidinCapitalAndReserves" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:from="econb_AdditionalPaidinCapitalAndReserves" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod" xlink:from="econb_AdditionalPaidinCapitalAndReserves" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TreasuryShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TreasuryShares"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_TreasuryShares" xlink:from="econb_AdditionalPaidinCapitalAndReserves" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <loc xlink:type="locator" xlink:label="econb_NoncurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NoncurrentGrossLiabilityForPurchasesOfLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_NoncurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:from="ifrs-full_NoncurrentLiabilities" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <loc xlink:type="locator" xlink:label="econb_CurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_CurrentGrossLiabilityForPurchasesOfLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_CurrentGrossLiabilityForPurchasesOfLeasedAssets" xlink:from="ifrs-full_CurrentLiabilities" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TradeAndOtherCurrentPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <loc xlink:type="locator" xlink:label="econb_SelfFundedOutstandingRentalsLiabilities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_SelfFundedOutstandingRentalsLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_SelfFundedOutstandingRentalsLiabilities" xlink:from="ifrs-full_TradeAndOtherCurrentPayables" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ExpenseByNature" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ExpenseByNature"/>
    <loc xlink:type="locator" xlink:label="econb_AmortisationAndProvisions" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AmortisationAndProvisions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_AmortisationAndProvisions" xlink:from="ifrs-full_ExpenseByNature" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DepreciationAndAmortisationExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_DepreciationAndAmortisationExpense" xlink:from="econb_AmortisationAndProvisions" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <loc xlink:type="locator" xlink:label="econb_FinancialExpensesFromOperatingActivities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_FinancialExpensesFromOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_FinancialExpensesFromOperatingActivities" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_FinancialIncomeFromOperatingActivities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_FinancialIncomeFromOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_FinancialIncomeFromOperatingActivities" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_AmortisationOfIntangibleAssetsFromAcquisitions" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AmortisationOfIntangibleAssetsFromAcquisitions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_AmortisationOfIntangibleAssetsFromAcquisitions" xlink:from="ifrs-full_ExpenseByNature" order="1"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_DepreciationAndAmortisationExpense" xlink:from="econb_AmortisationOfIntangibleAssetsFromAcquisitions" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_BasicEarningsLossPerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BasicEarningsLossPerShare"/>
    <loc xlink:type="locator" xlink:label="econb_RecurringNetEarningsLossPerShare" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_RecurringNetEarningsLossPerShare"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_RecurringNetEarningsLossPerShare" xlink:from="ifrs-full_BasicEarningsLossPerShare" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsToReconcileProfitLossOtherThanChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsToReconcileProfitLossOtherThanChangesInWorkingCapital"/>
    <loc xlink:type="locator" xlink:label="econb_ProvisionsDepreciationAmortisationAndImpairment" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ProvisionsDepreciationAmortisationAndImpairment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_ProvisionsDepreciationAmortisationAndImpairment" xlink:from="ifrs-full_AdjustmentsToReconcileProfitLossOtherThanChangesInWorkingCapital" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForProvisions"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_AdjustmentsForProvisions" xlink:from="econb_ProvisionsDepreciationAmortisationAndImpairment" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:from="econb_ProvisionsDepreciationAmortisationAndImpairment" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_EliminationOfTheImpactOfResidualInterestOnLeasedAssets" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_EliminationOfTheImpactOfResidualInterestOnLeasedAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_EliminationOfTheImpactOfResidualInterestOnLeasedAssets" xlink:from="ifrs-full_AdjustmentsToReconcileProfitLossOtherThanChangesInWorkingCapital" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForFinanceCosts" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForFinanceCosts"/>
    <loc xlink:type="locator" xlink:label="econb_AdjustementsForCostOfNetDebt" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AdjustementsForCostOfNetDebt"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_AdjustementsForCostOfNetDebt" xlink:from="ifrs-full_AdjustmentsForFinanceCosts" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital"/>
    <loc xlink:type="locator" xlink:label="econb_InvestmentsInSelfFundedTMFContracts" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_InvestmentsInSelfFundedTMFContracts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_InvestmentsInSelfFundedTMFContracts" xlink:from="ifrs-full_IncreaseDecreaseInWorkingCapital" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_OtherChangesInWorkingCapitalRequirement" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_OtherChangesInWorkingCapitalRequirement"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_OtherChangesInWorkingCapitalRequirement" xlink:from="ifrs-full_IncreaseDecreaseInWorkingCapital" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets"/>
    <loc xlink:type="locator" xlink:label="econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" xlink:from="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:from="econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:from="econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PurchaseOfInvestmentProperty" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfInvestmentProperty"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_PurchaseOfInvestmentProperty" xlink:from="econb_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentProperty" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets"/>
    <loc xlink:type="locator" xlink:label="econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:from="ifrs-full_ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:from="econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromSalesOfInvestmentProperty" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromSalesOfInvestmentProperty"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_ProceedsFromSalesOfInvestmentProperty" xlink:from="econb_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations"/>
    <loc xlink:type="locator" xlink:label="econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:from="econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:from="econb_AcquisitionDisposalOfCompaniesAndBusinessesNetOfCashAcquiredDisposed" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures"/>
    <loc xlink:type="locator" xlink:label="econb_BuyingBackOfConvertibleBondsOCEANE" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_Schuldschein2025Repayment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_BuyingBackOfConvertibleBondsOCEANE" xlink:from="ifrs-full_RepaymentsOfBondsNotesAndDebentures" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_Schuldschein2016Repayment" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_Schuldschein2022Repayment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_Schuldschein2016Repayment" xlink:from="ifrs-full_RepaymentsOfBondsNotesAndDebentures" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations"/>
    <loc xlink:type="locator" xlink:label="econb_ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_ChangesInRefinancingLiabilitiesOnLeaseContractsAndLiabilitiesOnSelffundedContracts" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_ChangesFactoringLiabilitiesandReverseFactoringLiabilities" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_ChangesFactoringLiabilitiesandReverseFactoringLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_ChangesFactoringLiabilitiesandReverseFactoringLiabilities" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" order="1"/>
    <loc xlink:type="locator" xlink:label="econb_NetChangeInCommercialPaper" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_NetChangeInCommercialPaper"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_NetChangeInCommercialPaper" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:from="econb_NetChangeInCommercialPaper" order="1"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:from="econb_NetChangeInCommercialPaper" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl"/>
    <loc xlink:type="locator" xlink:label="econb_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="econb_PutAndCallOptionsOnNoncontrollingInterestsChangeInFairValue" xlink:from="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" order="1"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <loc xlink:type="locator" xlink:label="Schuldschein2025Borrowings" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_Schuldschein2025Borrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="Schuldschein2025Borrowings" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" order="2.0"/>
    <loc xlink:type="locator" xlink:label="PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:href="5493006G5O9JP185PU76-2025-12-31.xsd#econb_PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="PutAndCallOptionsOnNoncontrollingInterestsInitialRecognition" xlink:from="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" order="3.0"/>
  </definitionLink>
</linkbase>