<?xml version="1.0" encoding="utf-8"?>
<?taxonomy-generator id="PomdocPro" version="2021.1.1.1" date="2026-04-08 09:03:27"?>
<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.esma.europa.eu/xbrl/role/all/ias_1_role-610000_extended"
    xlink:href="Legrand-2025-12-31.xsd#ias_1_role-610000_extended"
    xlink:type="simple"
  />
  <roleRef
    roleURI="http://www.legrandgroup.com/2024-10-05/xbrl/role/Anchoring"
    xlink:href="Legrand-2025-12-31.xsd#Anchoring"
    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"
  />
  <definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/all/ias_1_role-610000_extended" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable_0" 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" use="optional" xlink:to="loc_ifrs-full_StatementOfChangesInEquityTable_0" priority="0" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="2.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_0" 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" use="optional" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_0" priority="0" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable_0" order="1.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapitalMember_0" 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" use="optional" xlink:to="loc_ifrs-full_IssuedCapitalMember_0" priority="0" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_0" order="1.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReservesMember_0" 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" use="optional" xlink:to="loc_ifrs-full_OtherReservesMember_0" priority="0" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_0" order="2.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_0" 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" use="optional" xlink:to="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_0" priority="0" xlink:from="loc_ifrs-full_OtherReservesMember_0" order="1.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" use="optional" xlink:to="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_0" priority="0" xlink:from="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_0" order="1.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" use="optional" xlink:to="loc_ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember_0" priority="0" xlink:from="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_0" order="2.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsMember_0" 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" use="optional" xlink:to="loc_ifrs-full_RetainedEarningsMember_0" priority="0" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_0" order="3.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterestsMember_0" 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/dimension-domain" xlink:to="loc_ifrs-full_Equity_0" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_0" order="11.0"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_0" xlink:from="loc_ifrs-full_Equity_0" order="12.0"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="loc_ifrs-full_NoncontrollingInterestsMember_0" xlink:from="loc_ifrs-full_Equity_0" order="13.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="14.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="15.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="16.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="17.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="18.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="19.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="20.0"/>
    <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"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="21.0"/>
    <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="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="22.0"/>
    <loc xlink:type="locator" xlink:label="ShareIssueRelatedCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ShareIssueRelatedCost"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ShareIssueRelatedCost" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="23.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CancellationOfTreasuryShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CancellationOfTreasuryShares"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CancellationOfTreasuryShares" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="24.0"/>
    <loc xlink:type="locator" xlink:label="IssuanceConvertibleInstruments" xlink:href="Legrand-2025-12-31.xsd#Legrand_IssuanceConvertibleInstruments"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="IssuanceConvertibleInstruments" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_0" order="20.0"/>
  </definitionLink>
  <definitionLink xlink:role="http://www.legrandgroup.com/2024-10-05/xbrl/role/Anchoring" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_CashFlowsUsedInCapitalizedDevelopmentCosts_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_CashFlowsUsedInCapitalizedDevelopmentCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_CashFlowsUsedInCapitalizedDevelopmentCosts_1" priority="0" xlink:from="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_0" order="2.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts_1" priority="0" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_0" order="3.0"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets_1" priority="0" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_0" order="4.0"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets_0" priority="0" xlink:from="loc_Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities_1" order="7.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForReconcileProfitLoss_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForReconcileProfitLoss"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities_1" priority="0" xlink:from="loc_ifrs-full_AdjustmentsForReconcileProfitLoss_0" order="8.0"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables_0" priority="0" xlink:from="loc_Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities_1" order="9.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherOperatingPayables_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInOtherOperatingPayables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherOperatingPayables_0" priority="0" xlink:from="loc_Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities_1" order="10.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities_0" priority="0" xlink:from="loc_Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities_1" order="11.0"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities_1" priority="0" xlink:from="loc_ifrs-full_AdjustmentsForReconcileProfitLoss_0" order="12.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_1" 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="loc_Legrand_Reserves_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_Reserves"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_Reserves_1" priority="0" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_1" order="13.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarnings_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarnings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_RetainedEarnings_0" priority="0" xlink:from="loc_Legrand_Reserves_1" order="14.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlans_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlans"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlans_0" priority="0" xlink:from="loc_Legrand_Reserves_1" order="15.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncomeTaxExpense_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_AdjustmentsForDeferredTaxesReversingInTheLongTerm_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDeferredTaxesReversingInTheLongTerm"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_AdjustmentsForDeferredTaxesReversingInTheLongTerm_1" priority="0" xlink:from="loc_ifrs-full_AdjustmentsForIncomeTaxExpense_0" order="16.0"/>
    <loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities_0" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities"/>
    <loc xlink:type="locator" xlink:label="loc_Legrand_CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities_1" xlink:href="Legrand-2025-12-31.xsd#Legrand_CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" use="optional" xlink:to="loc_Legrand_CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities_1" priority="0" xlink:from="loc_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities_0" order="17.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations"/>
    <loc xlink:type="locator" xlink:label="CessionActifsImmobilises" xlink:href="Legrand-2025-12-31.xsd#Legrand_CessionActifsImmobilises"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="CessionActifsImmobilises" xlink:from="ifrs-full_ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations" order="18.0"/>
    <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="CessionActifsImmobilises" order="19.0"/>
    <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="CessionActifsImmobilises" order="20.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <loc xlink:type="locator" xlink:label="InteretsLiesAuxDettesLocations" xlink:href="Legrand-2025-12-31.xsd#Legrand_InteretsLiesAuxDettesLocations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="InteretsLiesAuxDettesLocations" xlink:from="ifrs-full_InterestPaidClassifiedAsOperatingActivities" order="21.0"/>
    <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="RemboursementDesFinancementsLongTerme" xlink:href="Legrand-2025-12-31.xsd#Legrand_RemboursementDesFinancementsLongTerme"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="RemboursementDesFinancementsLongTerme" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" order="22.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfNoncurrentBorrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:from="RemboursementDesFinancementsLongTerme" order="23.0"/>
    <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://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:from="RemboursementDesFinancementsLongTerme" order="24.0"/>
    <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="AcquisitionActifsImmobilises" xlink:href="Legrand-2025-12-31.xsd#Legrand_AcquisitionActifsImmobilises"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AcquisitionActifsImmobilises" xlink:from="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" order="25.0"/>
    <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="AcquisitionActifsImmobilises" order="26.0"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_0" xlink:from="AcquisitionActifsImmobilises" order="27.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax"/>
    <loc xlink:type="locator" xlink:label="AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet" xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax" order="28.0"/>
    <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"/>
    <loc xlink:type="locator" xlink:label="AutresCreancesCourantes" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresCreancesCourantes"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AutresCreancesCourantes" xlink:from="ifrs-full_CurrentAssets" order="29.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentAdvancesToSuppliers" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentAdvancesToSuppliers"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentAdvancesToSuppliers" xlink:from="AutresCreancesCourantes" order="30.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" xlink:from="AutresCreancesCourantes" order="31.0"/>
    <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"/>
    <loc xlink:type="locator" xlink:label="AutresPassifsCourants" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresPassifsCourants"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AutresPassifsCourants" xlink:from="ifrs-full_CurrentLiabilities" order="32.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentPayablesForPurchaseOfNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentPayablesForPurchaseOfNoncurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentPayablesForPurchaseOfNoncurrentAssets" xlink:from="AutresPassifsCourants" order="34.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities" xlink:from="AutresPassifsCourants" order="35.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentDeferredIncomeOtherThanCurrentContractLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentDeferredIncomeOtherThanCurrentContractLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentDeferredIncomeOtherThanCurrentContractLiabilities" xlink:from="AutresPassifsCourants" order="36.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfTangibleAssets" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfTangibleAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AdjustmentsForDepreciationAndAmortisationOfTangibleAssets" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_0" order="37.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_0" order="38.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromNoncurrentBorrowings"/>
    <loc xlink:type="locator" xlink:label="NouveauxFinancementsLongTerme" xlink:href="Legrand-2025-12-31.xsd#Legrand_NouveauxFinancementsLongTerme"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="NouveauxFinancementsLongTerme" xlink:from="ifrs-full_ProceedsFromNoncurrentBorrowings" order="39.0"/>
    <loc xlink:type="locator" xlink:label="EmissionOCEANEs" xlink:href="Legrand-2025-12-31.xsd#Legrand_EmissionOCEANEs"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="EmissionOCEANEs" xlink:from="ifrs-full_ProceedsFromNoncurrentBorrowings" order="40.0"/>
    <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"/>
    <loc xlink:type="locator" xlink:label="IssuanceConvertibleInstruments" xlink:href="Legrand-2025-12-31.xsd#Legrand_IssuanceConvertibleInstruments"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="IssuanceConvertibleInstruments" xlink:from="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" order="41.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:to="ifrs-full_CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax" xlink:from="AutresPassifsCourants" order="42.0"/>
  </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_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="2.0"/>
    <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="3.0"/>
    <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="4.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="5.0"/>
    <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="6.0"/>
    <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="7.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_NoncurrentInvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentInvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_NoncurrentInvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="8.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherNoncurrentAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="9.0"/>
    <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="10.0"/>
    <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="11.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentTaxAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentTaxAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentTaxAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="12.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentTradeReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentTradeReceivables"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentTradeReceivables" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="13.0"/>
    <loc xlink:type="locator" xlink:label="AutresCreancesCourantes" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresCreancesCourantes"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AutresCreancesCourantes" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="14.0"/>
    <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="15.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherCurrentFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentFinancialAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherCurrentFinancialAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="16.0"/>
    <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="17.0"/>
    <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="18.0"/>
    <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="19.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslation"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="20.0"/>
    <loc xlink:type="locator" xlink:label="Reserves" xlink:href="Legrand-2025-12-31.xsd#Legrand_Reserves"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="Reserves" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="21.0"/>
    <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="22.0"/>
    <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="23.0"/>
    <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="24.0"/>
    <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="25.0"/>
    <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="26.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_LongtermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_LongtermBorrowings" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="27.0"/>
    <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="28.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_TradeAndOtherPayablesToTradeSuppliers" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherPayablesToTradeSuppliers"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_TradeAndOtherPayablesToTradeSuppliers" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="29.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CurrentTaxLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentTaxLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CurrentTaxLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="30.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ShorttermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ShorttermBorrowings" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="31.0"/>
    <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="32.0"/>
    <loc xlink:type="locator" xlink:label="AutresPassifsCourants" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresPassifsCourants"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AutresPassifsCourants" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="33.0"/>
    <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="34.0"/>
    <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="35.0"/>
    <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="36.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SellingGeneralAndAdministrativeExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="37.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ResearchAndDevelopmentExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ResearchAndDevelopmentExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ResearchAndDevelopmentExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="38.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_Revenue" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Revenue"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_Revenue" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="39.0"/>
    <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="40.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherOperatingIncomeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherOperatingIncomeExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherOperatingIncomeExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="41.0"/>
    <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="42.0"/>
    <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="43.0"/>
    <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="44.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="45.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_FinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceIncomeCost"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_FinanceIncomeCost" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="46.0"/>
    <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="47.0"/>
    <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="48.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="49.0"/>
    <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="50.0"/>
    <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="51.0"/>
    <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="52.0"/>
    <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="53.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="54.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="55.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="56.0"/>
    <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="57.0"/>
    <loc xlink:type="locator" xlink:label="AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet" xlink:href="Legrand-2025-12-31.xsd#Legrand_AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AutresEffetElementsDuResultatGlobalNonReclassesEnResultatNet" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="58.0"/>
    <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="59.0"/>
    <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="60.0"/>
    <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="61.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PeriodCoveredByFinancialStatements" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PeriodCoveredByFinancialStatements"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PeriodCoveredByFinancialStatements" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="62.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_LevelOfRoundingUsedInFinancialStatements" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LevelOfRoundingUsedInFinancialStatements"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_LevelOfRoundingUsedInFinancialStatements" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="63.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="64.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="65.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="66.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="67.0"/>
    <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="68.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="69.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForIncreaseDecreaseInotherNonCurrentAssetsAndLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="70.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForIncreaseDecreaseInOtherOperatingAssetsAndLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="71.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="72.0"/>
    <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="73.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForDepreciationAndAmortisationOfCapitalizedDevelopmentCosts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="74.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForDepreciationAndAmortisationOfRightOfUseAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="75.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfTangibleAssets" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfTangibleAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForDepreciationAndAmortisationOfTangibleAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="76.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForDepreciationAndAmortisationOfIntangibleAssets" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="77.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_AdjustmentsForInterestExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForInterestExpense"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_AdjustmentsForInterestExpense" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="78.0"/>
    <loc xlink:type="locator" xlink:label="AdjustmentsForDeferredTaxesReversingInTheLongTerm" xlink:href="Legrand-2025-12-31.xsd#Legrand_AdjustmentsForDeferredTaxesReversingInTheLongTerm"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AdjustmentsForDeferredTaxesReversingInTheLongTerm" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="79.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="80.0"/>
    <loc xlink:type="locator" xlink:label="CessionActifsImmobilises" xlink:href="Legrand-2025-12-31.xsd#Legrand_CessionActifsImmobilises"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CessionActifsImmobilises" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="81.0"/>
    <loc xlink:type="locator" xlink:label="AcquisitionActifsImmobilises" xlink:href="Legrand-2025-12-31.xsd#Legrand_AcquisitionActifsImmobilises"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="AcquisitionActifsImmobilises" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="82.0"/>
    <loc xlink:type="locator" xlink:label="CashFlowsUsedInCapitalizedDevelopmentCosts" xlink:href="Legrand-2025-12-31.xsd#Legrand_CashFlowsUsedInCapitalizedDevelopmentCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CashFlowsUsedInCapitalizedDevelopmentCosts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="83.0"/>
    <loc xlink:type="locator" xlink:label="CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities" xlink:href="Legrand-2025-12-31.xsd#Legrand_CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="CashFlowsFromUsedInNonCurrentFinancialAssetsAndLiabilities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="84.0"/>
    <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://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="85.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="86.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromIssuingShares" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProceedsFromIssuingShares" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="87.0"/>
    <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="88.0"/>
    <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="89.0"/>
    <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="90.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromNoncurrentBorrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="91.0"/>
    <loc xlink:type="locator" xlink:label="RemboursementDesFinancementsLongTerme" xlink:href="Legrand-2025-12-31.xsd#Legrand_RemboursementDesFinancementsLongTerme"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="RemboursementDesFinancementsLongTerme" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="92.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PaymentsForDebtIssueCosts" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsForDebtIssueCosts"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_PaymentsForDebtIssueCosts" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="93.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="94.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries" 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_PaymentsFromChangesInOwnershipInterestsInSubsidiaries" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="95.0"/>
    <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"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="96.0"/>
    <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="97.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="98.0"/>
    <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="99.0"/>
    <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="100.0"/>
    <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="101.0"/>
    <loc xlink:type="locator" xlink:label="InteretsLiesAuxDettesLocations" xlink:href="Legrand-2025-12-31.xsd#Legrand_InteretsLiesAuxDettesLocations"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="InteretsLiesAuxDettesLocations" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="102.0"/>
    <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="103.0"/>
    <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="104.0"/>
    <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="105.0"/>
    <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="106.0"/>
    <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="107.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="108.0"/>
    <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="109.0"/>
    <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="110.0"/>
    <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="111.0"/>
    <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="112.0"/>
    <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="113.0"/>
    <loc xlink:type="locator" xlink:label="GestionDuRisqueClimatique" xlink:href="Legrand-2025-12-31.xsd#Legrand_GestionDuRisqueClimatique"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="GestionDuRisqueClimatique" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="114.0"/>
    <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="115.0"/>
    <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="116.0"/>
    <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="117.0"/>
    <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="118.0"/>
    <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="119.0"/>
    <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="120.0"/>
    <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="121.0"/>
    <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="122.0"/>
    <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="123.0"/>
    <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="124.0"/>
    <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="125.0"/>
    <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="126.0"/>
    <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="127.0"/>
    <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="128.0"/>
    <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="129.0"/>
    <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="130.0"/>
    <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="131.0"/>
    <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="132.0"/>
    <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="133.0"/>
    <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="134.0"/>
    <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="135.0"/>
    <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="136.0"/>
    <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="137.0"/>
    <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="138.0"/>
    <loc xlink:type="locator" xlink:label="ReconciliationChiffresCles" xlink:href="Legrand-2025-12-31.xsd#Legrand_ReconciliationChiffresCles"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ReconciliationChiffresCles" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="139.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAuditorsRemunerationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="140.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfAdditionalInformationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAdditionalInformationExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfAdditionalInformationExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="141.0"/>
    <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="142.0"/>
    <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="143.0"/>
    <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="144.0"/>
    <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="145.0"/>
    <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="146.0"/>
    <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="147.0"/>
    <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="148.0"/>
    <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="149.0"/>
    <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="150.0"/>
    <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="151.0"/>
    <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="152.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="153.0"/>
    <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="154.0"/>
    <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="155.0"/>
    <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="156.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="157.0"/>
    <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="158.0"/>
    <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="159.0"/>
    <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="160.0"/>
    <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="161.0"/>
    <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="162.0"/>
    <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="163.0"/>
    <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="164.0"/>
    <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="165.0"/>
    <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="166.0"/>
    <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="167.0"/>
    <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="168.0"/>
    <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="169.0"/>
    <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="170.0"/>
    <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="171.0"/>
    <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="172.0"/>
    <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="173.0"/>
    <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="174.0"/>
    <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="175.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfHyperinflationaryReportingExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfHyperinflationaryReportingExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfHyperinflationaryReportingExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="176.0"/>
    <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="177.0"/>
    <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="178.0"/>
    <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="179.0"/>
    <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="180.0"/>
    <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="181.0"/>
    <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="182.0"/>
    <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="183.0"/>
    <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="184.0"/>
    <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="185.0"/>
    <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="186.0"/>
    <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="187.0"/>
    <loc xlink:type="locator" xlink:label="ChiffresCles" xlink:href="Legrand-2025-12-31.xsd#Legrand_ChiffresCles"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ChiffresCles" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="188.0"/>
    <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="189.0"/>
    <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="190.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="191.0"/>
    <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="192.0"/>
    <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="193.0"/>
    <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="194.0"/>
    <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="195.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="196.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="197.0"/>
    <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="198.0"/>
    <loc xlink:type="locator" xlink:label="ifrs-full_ShareIssueRelatedCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ShareIssueRelatedCost"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:to="ifrs-full_ShareIssueRelatedCost" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" order="199.0"/>
  </definitionLink>
</linkbase>