<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019cfbfc-3e87-7690-875a-7b9306606bd7,g:8e4e239b-d720-430c-b5cb-9cc3ad8ec7d9-->
<link:linkbase xmlns:link="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">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower"/>
  <link:roleRef roleURI="http://www.3i.com/role/Statementofchangesinequity" xlink:type="simple" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#Statementofchangesinequity"/>
  <link:definitionLink xlink:role="http://www.3i.com/role/Statementofchangesinequity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityAbstract_019cfbfc-3e87-7573-a8c5-dbe5cfceaa9c" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable_019cfbfc-3e87-7d8f-b9a9-dcdc6999036b" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_019cfbfc-3e87-7573-a8c5-dbe5cfceaa9c" xlink:to="loc_ifrs-full_StatementOfChangesInEquityTable_019cfbfc-3e87-7d8f-b9a9-dcdc6999036b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="scenario"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_019cfbfc-3e87-7191-a7f7-f1d4d9e860a2" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable_019cfbfc-3e87-7d8f-b9a9-dcdc6999036b" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_019cfbfc-3e87-7191-a7f7-f1d4d9e860a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_019cfbfc-3e87-7191-a7f7-f1d4d9e860a2" xlink:to="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapitalMember_019cfbfc-3e87-74f2-adb5-46489b43892b" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssuedCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_IssuedCapitalMember_019cfbfc-3e87-74f2-adb5-46489b43892b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremiumMember_019cfbfc-3e87-7532-823c-e5dd5bf6b428" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SharePremiumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_SharePremiumMember_019cfbfc-3e87-7532-823c-e5dd5bf6b428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CapitalRedemptionReserveMember_019cfbfc-3e87-7b96-b06d-10069bf34669" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CapitalRedemptionReserveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_CapitalRedemptionReserveMember_019cfbfc-3e87-7b96-b06d-10069bf34669" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReservesMember_019cfbfc-3e87-761e-9b99-cf9cd2f7c4ad" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_OtherReservesMember_019cfbfc-3e87-761e-9b99-cf9cd2f7c4ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfSharebasedPaymentsMember_019cfbfc-3e87-723c-a62e-832c7bf2fd40" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfSharebasedPaymentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_OtherReservesMember_019cfbfc-3e87-761e-9b99-cf9cd2f7c4ad" xlink:to="loc_ifrs-full_ReserveOfSharebasedPaymentsMember_019cfbfc-3e87-723c-a62e-832c7bf2fd40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_019cfbfc-3e87-7fa0-8b35-1ea94074ed52" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_OtherReservesMember_019cfbfc-3e87-761e-9b99-cf9cd2f7c4ad" xlink:to="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_019cfbfc-3e87-7fa0-8b35-1ea94074ed52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CapitalReserveMember_019cfbfc-3e87-79ac-98ba-714a0a6e63de" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CapitalReserveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_CapitalReserveMember_019cfbfc-3e87-79ac-98ba-714a0a6e63de" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsMember_019cfbfc-3e87-7e93-9c11-d50b77929018" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_RetainedEarningsMember_019cfbfc-3e87-7e93-9c11-d50b77929018" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasurySharesMember_019cfbfc-3e87-729d-b3cb-b6a3fdf4df9c" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TreasurySharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019cfbfc-3e87-7618-9a47-4281befd9b2f" xlink:to="loc_ifrs-full_TreasurySharesMember_019cfbfc-3e87-729d-b3cb-b6a3fdf4df9c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems_019cfbfc-3e87-7b59-8e51-c11cc12498e8" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract_019cfbfc-3e87-7573-a8c5-dbe5cfceaa9c" xlink:to="loc_ifrs-full_StatementOfChangesInEquityLineItems_019cfbfc-3e87-7b59-8e51-c11cc12498e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019cfbfc-3e87-7d3f-82df-ba5dc5954c90" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019cfbfc-3e87-7b59-8e51-c11cc12498e8" xlink:to="loc_ifrs-full_Equity_019cfbfc-3e87-7d3f-82df-ba5dc5954c90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ChangesInEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019cfbfc-3e87-7b59-8e51-c11cc12498e8" xlink:to="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncomeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_019cfbfc-3e87-7c16-8667-b1e76fa17054" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:to="loc_ifrs-full_ProfitLoss_019cfbfc-3e87-7c16-8667-b1e76fa17054" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019cfbfc-3e87-784c-ae9b-2acbb3a508f5" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019cfbfc-3e87-784c-ae9b-2acbb3a508f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_019cfbfc-3e87-7f10-8d8e-0f27651b572f" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_019cfbfc-3e87-7f10-8d8e-0f27651b572f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_019cfbfc-3e87-7af1-b780-6d4c76f0d32e" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComprehensiveIncomeAbstract_019cfbfc-3e87-7e14-8ffd-425e824a8f20" xlink:to="loc_ifrs-full_ComprehensiveIncome_019cfbfc-3e87-7af1-b780-6d4c76f0d32e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019cfbfc-3e87-762a-9c72-f78e76d20f9e" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019cfbfc-3e87-762a-9c72-f78e76d20f9e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ReleaseOnExerciseForfeitureOfShareAwards_019cfbfc-3e87-7fe3-8e61-be680f47c5d9" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ReleaseOnExerciseForfeitureOfShareAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_threei_ReleaseOnExerciseForfeitureOfShareAwards_019cfbfc-3e87-7fe3-8e61-be680f47c5d9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ExerciseOfShareAwards_019cfbfc-3e87-76b6-b31a-cb4d47bbad65" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ExerciseOfShareAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_threei_ExerciseOfShareAwards_019cfbfc-3e87-76b6-b31a-cb4d47bbad65" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaid_019cfbfc-3e87-7b0d-bd17-c711d962fda3" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_ifrs-full_DividendsPaid_019cfbfc-3e87-7b0d-bd17-c711d962fda3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfTreasuryShares_019e1631-9b54-7c5a-a165-bf0d6f691620" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfTreasuryShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_ifrs-full_PurchaseOfTreasuryShares_019e1631-9b54-7c5a-a165-bf0d6f691620" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssueOfEquity_019cfbfc-3e87-721c-9282-d0866afa1d15" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssueOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ChangesInEquityAbstract_019cfbfc-3e87-7824-bafd-6e8ee856df34" xlink:to="loc_ifrs-full_IssueOfEquity_019cfbfc-3e87-721c-9282-d0866afa1d15" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019cfbfc-3e87-7716-8ae8-9a2911c75063" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Equity"/>
  </link:definitionLink>
  <link:roleRef roleURI="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="simple" xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_role-999999"/>
  <link:definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:href="https://www.esma.europa.eu/taxonomy/2024-03-27/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-789b-aa2d-d470f2951bc9NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-789b-aa2d-d470f2951bc9NotDimensionallyQualified" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossOnExchangeDifferencesFairValueMeasurementAssets_019cfbfc-3e87-748d-b583-a17c655c732aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesRecognisedInProfitOrLossOnExchangeDifferencesFairValueMeasurementAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossOnExchangeDifferencesFairValueMeasurementAssets_019cfbfc-3e87-748d-b583-a17c655c732aNotDimensionallyQualified" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019cfbfc-3e87-7866-8b2e-e0f308750e72NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Revenue_019cfbfc-3e87-7866-8b2e-e0f308750e72NotDimensionallyQualified" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations_019cfbfc-3e87-753d-94ba-bc0597e9b181NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations_019cfbfc-3e87-753d-94ba-bc0597e9b181NotDimensionallyQualified" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_OperatingProfitBeforeCarriedInterest_019cfbfc-3e87-7bb5-8615-3ad420f42516NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_OperatingProfitBeforeCarriedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_OperatingProfitBeforeCarriedInterest_019cfbfc-3e87-7bb5-8615-3ad420f42516NotDimensionallyQualified" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense_019cfbfc-3e87-7098-a534-b74a43e66c1dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OperatingExpense_019cfbfc-3e87-7098-a534-b74a43e66c1dNotDimensionallyQualified" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss_019cfbfc-3e87-7927-ae8b-38779724bfcfNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss_019cfbfc-3e87-7927-ae8b-38779724bfcfNotDimensionallyQualified" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PortfolioAndOtherManagementFeeIncome_019cfbfc-3e87-7ce7-a73d-4a047ce4ffb3NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PortfolioAndOtherManagementFeeIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PortfolioAndOtherManagementFeeIncome_019cfbfc-3e87-7ce7-a73d-4a047ce4ffb3NotDimensionallyQualified" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_019cfbfc-3e87-7a5d-8075-a6c5184f0a88NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_019cfbfc-3e87-7a5d-8075-a6c5184f0a88NotDimensionallyQualified" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_019cfbfc-3e87-7a0d-816c-e4d9cd2553dcNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLoss_019cfbfc-3e87-7a0d-816c-e4d9cd2553dcNotDimensionallyQualified" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7c2a-859f-bfe819e0f916NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7c2a-859f-bfe819e0f916NotDimensionallyQualified" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_019cfbfc-3e87-7b21-a791-8ca66c88486dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_019cfbfc-3e87-7b21-a791-8ca66c88486dNotDimensionallyQualified" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_019cfbfc-3e87-7905-b4e0-93d5dced10f7NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ComprehensiveIncome_019cfbfc-3e87-7905-b4e0-93d5dced10f7NotDimensionallyQualified" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019cfbfc-3e87-7d53-853f-bb362d610e69NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019cfbfc-3e87-7d53-853f-bb362d610e69NotDimensionallyQualified" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations_019cfbfc-3e87-761f-ae72-858c7ca235f6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BasicEarningsLossPerShareFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations_019cfbfc-3e87-761f-ae72-858c7ca235f6NotDimensionallyQualified" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnDisposalsOfInvestments_019cfbfc-3e87-7855-a190-935e4a28b0c3NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnDisposalsOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesOnDisposalsOfInvestments_019cfbfc-3e87-7855-a190-935e4a28b0c3NotDimensionallyQualified" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherOperatingIncomeExpense_019cfbfc-3e87-7197-877f-eea10d0d1154NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherOperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherOperatingIncomeExpense_019cfbfc-3e87-7197-877f-eea10d0d1154NotDimensionallyQualified" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpense_019cfbfc-3e87-7917-b416-cdead6f5cafcNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InterestExpense_019cfbfc-3e87-7917-b416-cdead6f5cafcNotDimensionallyQualified" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromDividends_019cfbfc-3e87-77c7-a762-c75d72359e89NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RevenueFromDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RevenueFromDividends_019cfbfc-3e87-77c7-a762-c75d72359e89NotDimensionallyQualified" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019cfbfc-3e87-7574-baa2-2dbd43efa95dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019cfbfc-3e87-7574-baa2-2dbd43efa95dNotDimensionallyQualified" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromInterest_019cfbfc-3e87-7828-b309-e992c97f3f0fNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RevenueFromInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RevenueFromInterest_019cfbfc-3e87-7828-b309-e992c97f3f0fNotDimensionallyQualified" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates_019cfbfc-3e87-7448-82e3-973a7ca778bfNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates_019cfbfc-3e87-7448-82e3-973a7ca778bfNotDimensionallyQualified" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FairValueMovementsOnInvestmentEntitySubsidiaries_019cfbfc-3e87-7583-a9d8-06a6811008d8NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FairValueMovementsOnInvestmentEntitySubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_FairValueMovementsOnInvestmentEntitySubsidiaries_019cfbfc-3e87-7583-a9d8-06a6811008d8NotDimensionallyQualified" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FeesReceivableFromExternalFunds_019cfbfc-3e87-79a5-81e8-775f9e95cb1cNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FeesReceivableFromExternalFunds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_FeesReceivableFromExternalFunds_019cfbfc-3e87-79a5-81e8-775f9e95cb1cNotDimensionallyQualified" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019cfbfc-3e87-7e9b-9743-3ae2be7e20c3NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019cfbfc-3e87-7e9b-9743-3ae2be7e20c3NotDimensionallyQualified" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_019cfbfc-3e87-7099-ab1b-a3377425aa93NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_019cfbfc-3e87-7099-ab1b-a3377425aa93NotDimensionallyQualified" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_019cfbfc-3e87-7793-86ee-1b4877e74735NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncome_019cfbfc-3e87-7793-86ee-1b4877e74735NotDimensionallyQualified" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_UnrealisedProfitsOnTheRevaluationOfInvestments_019cfbfc-3e87-7015-a756-d85c1584cdc9NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_UnrealisedProfitsOnTheRevaluationOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_UnrealisedProfitsOnTheRevaluationOfInvestments_019cfbfc-3e87-7015-a756-d85c1584cdc9NotDimensionallyQualified" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_019cfbfc-3e87-70da-b495-c9b396c078feNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RightofuseAssets_019cfbfc-3e87-70da-b495-c9b396c078feNotDimensionallyQualified" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_019cfbfc-3e87-7c86-b196-a4df73146bfaNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_019cfbfc-3e87-7c86-b196-a4df73146bfaNotDimensionallyQualified" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CapitalRedemptionReserve_019cfbfc-3e87-75aa-9e5f-225e239bbd8bNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CapitalRedemptionReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CapitalRedemptionReserve_019cfbfc-3e87-75aa-9e5f-225e239bbd8bNotDimensionallyQualified" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan_019cfbfc-3e87-7771-b48f-4982c2c45dfcNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan_019cfbfc-3e87-7771-b48f-4982c2c45dfcNotDimensionallyQualified" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets_019cfbfc-3e87-74ae-bcba-4c40147b7009NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Assets_019cfbfc-3e87-74ae-bcba-4c40147b7009NotDimensionallyQualified" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentsInSubsidiaries_019cfbfc-3e87-7abb-aef4-40277139dcf4NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InvestmentsInSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InvestmentsInSubsidiaries_019cfbfc-3e87-7abb-aef4-40277139dcf4NotDimensionallyQualified" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019cfbfc-3e87-7c74-a398-c2e4e8c5eb65NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019cfbfc-3e87-7c74-a398-c2e4e8c5eb65NotDimensionallyQualified" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarnings_019cfbfc-3e87-7891-bc95-13ac5d827e11NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RetainedEarnings_019cfbfc-3e87-7891-bc95-13ac5d827e11NotDimensionallyQualified" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslation_019cfbfc-3e87-729f-bab3-c35c6df7bdfbNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslation_019cfbfc-3e87-729f-bab3-c35c6df7bdfbNotDimensionallyQualified" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetAssetsLiabilities_019cfbfc-3e87-794c-a497-e7058f6c0523NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NetAssetsLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NetAssetsLiabilities_019cfbfc-3e87-794c-a497-e7058f6c0523NotDimensionallyQualified" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7228-8c12-50b1ecd7d1e9NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CurrentCarriedInterestAndPerformanceFeesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7228-8c12-50b1ecd7d1e9NotDimensionallyQualified" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities_019cfbfc-3e87-7c29-87a1-6419dedeab30NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities_019cfbfc-3e87-7c29-87a1-6419dedeab30NotDimensionallyQualified" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_019cfbfc-3e87-72fb-9203-0a9e0aec4562NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentLiabilities_019cfbfc-3e87-72fb-9203-0a9e0aec4562NotDimensionallyQualified" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentAssets_019cfbfc-3e87-7cc0-8457-2bdc2b2b910fNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherCurrentAssets_019cfbfc-3e87-7cc0-8457-2bdc2b2b910fNotDimensionallyQualified" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CurrentCarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7f64-874c-71646790215aNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CurrentCarriedInterestAndPerformanceFeesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CurrentCarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7f64-874c-71646790215aNotDimensionallyQualified" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_019cfbfc-3e87-745a-a9f2-03bad0d9f2fcNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentLiabilities_019cfbfc-3e87-745a-a9f2-03bad0d9f2fcNotDimensionallyQualified" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremium_019cfbfc-3e87-7c83-a3b4-4b815bff23f7NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SharePremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_SharePremium_019cfbfc-3e87-7c83-a3b4-4b815bff23f7NotDimensionallyQualified" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentAssets_019cfbfc-3e87-74fa-ae7c-371ee9ca12f9NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherNoncurrentAssets_019cfbfc-3e87-74fa-ae7c-371ee9ca12f9NotDimensionallyQualified" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_QuotedInvestments_019cfbfc-3e87-773e-a752-b8c8035340f0NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_QuotedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_QuotedInvestments_019cfbfc-3e87-773e-a752-b8c8035340f0NotDimensionallyQualified" xlink:type="arc" order="46"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapital_019cfbfc-3e87-7367-857b-6a2e3b75ef50NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IssuedCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IssuedCapital_019cfbfc-3e87-7367-857b-6a2e3b75ef50NotDimensionallyQualified" xlink:type="arc" order="47"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_019cfbfc-3e87-7ef9-919b-86b5d35f1a1aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentAssets_019cfbfc-3e87-7ef9-919b-86b5d35f1a1aNotDimensionallyQualified" xlink:type="arc" order="48"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_InvestmentPortfolio_019cfbfc-3e87-7b50-bf73-d133da82dca2NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_InvestmentPortfolio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_InvestmentPortfolio_019cfbfc-3e87-7b50-bf73-d133da82dca2NotDimensionallyQualified" xlink:type="arc" order="49"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan_019cfbfc-3e87-74ea-929f-a772b81414e5NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan_019cfbfc-3e87-74ea-929f-a772b81414e5NotDimensionallyQualified" xlink:type="arc" order="50"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_NonCurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7079-ba6c-1cc785f0c092NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_NonCurrentCarriedInterestAndPerformanceFeesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_NonCurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7079-ba6c-1cc785f0c092NotDimensionallyQualified" xlink:type="arc" order="51"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfSharebasedPayments_019cfbfc-3e87-72c8-9c93-45fea60feedcNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ReserveOfSharebasedPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ReserveOfSharebasedPayments_019cfbfc-3e87-72c8-9c93-45fea60feedcNotDimensionallyQualified" xlink:type="arc" order="52"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasuryShares_019cfbfc-3e87-791f-a063-698c8ff1f4d4NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TreasuryShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_TreasuryShares_019cfbfc-3e87-791f-a063-698c8ff1f4d4NotDimensionallyQualified" xlink:type="arc" order="53"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_019cfbfc-3e87-71dc-87ec-b7e7305e404aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentAssets_019cfbfc-3e87-71dc-87ec-b7e7305e404aNotDimensionallyQualified" xlink:type="arc" order="54"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_UnquotedInvestments_019cfbfc-3e87-7222-ad2e-d80c8125cbe7NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_UnquotedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_UnquotedInvestments_019cfbfc-3e87-7222-ad2e-d80c8125cbe7NotDimensionallyQualified" xlink:type="arc" order="55"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019cfbfc-3e87-7852-9abd-de7ce156346cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Equity_019cfbfc-3e87-7852-9abd-de7ce156346cNotDimensionallyQualified" xlink:type="arc" order="56"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities_019cfbfc-3e87-7678-94b3-3ed3f874ec15NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities_019cfbfc-3e87-7678-94b3-3ed3f874ec15NotDimensionallyQualified" xlink:type="arc" order="57"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_019cfbfc-3f3f-7332-bc03-e2564fdd8218NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashAndCashEquivalents_019cfbfc-3f3f-7332-bc03-e2564fdd8218NotDimensionallyQualified" xlink:type="arc" order="58"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialAssets_019cfbfc-3e87-7422-a823-24fdd9a19eebNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialAssets_019cfbfc-3e87-7422-a823-24fdd9a19eebNotDimensionallyQualified" xlink:type="arc" order="59"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_019cfbfc-3e87-7690-9076-39082a789a93NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_019cfbfc-3e87-7690-9076-39082a789a93NotDimensionallyQualified" xlink:type="arc" order="60"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities_019cfbfc-3e87-7c7e-84d5-18182e82f5a4NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Liabilities_019cfbfc-3e87-7c7e-84d5-18182e82f5a4NotDimensionallyQualified" xlink:type="arc" order="61"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CapitalReserve_019cfbfc-3e87-7b02-bcc9-e87fdb9cb31eNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CapitalReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CapitalReserve_019cfbfc-3e87-7b02-bcc9-e87fdb9cb31eNotDimensionallyQualified" xlink:type="arc" order="62"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings_019cfbfc-3e87-7d80-b247-faad73f500a4NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_LongtermBorrowings_019cfbfc-3e87-7d80-b247-faad73f500a4NotDimensionallyQualified" xlink:type="arc" order="63"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019cfbfc-3e87-7646-baf5-d73479344383NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019cfbfc-3e87-7646-baf5-d73479344383NotDimensionallyQualified" xlink:type="arc" order="64"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPayables_019cfbfc-3e87-720d-a026-f9aef9b1e153NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentPayables_019cfbfc-3e87-720d-a026-f9aef9b1e153NotDimensionallyQualified" xlink:type="arc" order="65"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019cfbfc-3f3f-7cde-8150-87168352dd8fNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019cfbfc-3f3f-7cde-8150-87168352dd8fNotDimensionallyQualified" xlink:type="arc" order="66"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-72b7-a541-2345c496e779NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-72b7-a541-2345c496e779NotDimensionallyQualified" xlink:type="arc" order="67"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-780a-bb87-b20311a18e54NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-780a-bb87-b20311a18e54NotDimensionallyQualified" xlink:type="arc" order="68"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_019cfbfc-3f3f-727d-ac81-90f9f7b9552aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_019cfbfc-3f3f-727d-ac81-90f9f7b9552aNotDimensionallyQualified" xlink:type="arc" order="69"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashReceiptsFromOperatingActivities_019cfbfc-3f3f-75a7-b568-b2490e62d78aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCashReceiptsFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherCashReceiptsFromOperatingActivities_019cfbfc-3f3f-75a7-b568-b2490e62d78aNotDimensionallyQualified" xlink:type="arc" order="70"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019cfbfc-3f3f-7a86-8238-5f9756ec4103NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019cfbfc-3f3f-7a86-8238-5f9756ec4103NotDimensionallyQualified" xlink:type="arc" order="71"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioInterestReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7fde-ae48-35a0bbd84beaNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioInterestReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_PortfolioInterestReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7fde-ae48-35a0bbd84beaNotDimensionallyQualified" xlink:type="arc" order="72"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingShares_019cfbfc-3f3f-7f99-828e-4612eaddb07cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProceedsFromIssuingShares_019cfbfc-3f3f-7f99-828e-4612eaddb07cNotDimensionallyQualified" xlink:type="arc" order="73"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_019cfbfc-3f3f-7229-b476-46a95c62af02NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_019cfbfc-3f3f-7229-b476-46a95c62af02NotDimensionallyQualified" xlink:type="arc" order="74"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_019cfbfc-3f3f-7ad4-a731-98a8b81794efNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_019cfbfc-3f3f-7ad4-a731-98a8b81794efNotDimensionallyQualified" xlink:type="arc" order="75"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_019dbecf-f208-7ca2-a11a-9ceab4037e9eNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_019dbecf-f208-7ca2-a11a-9ceab4037e9eNotDimensionallyQualified" xlink:type="arc" order="76"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019cfbfc-3f3f-7cbd-9c96-4ef470bf774eNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019cfbfc-3f3f-7cbd-9c96-4ef470bf774eNotDimensionallyQualified" xlink:type="arc" order="77"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019cfbfc-3f3f-73aa-801a-e8f07c960aa5NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019cfbfc-3f3f-73aa-801a-e8f07c960aa5NotDimensionallyQualified" xlink:type="arc" order="78"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities_019cfbfc-3e87-7571-86dd-5bc351a31974NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities_019cfbfc-3e87-7571-86dd-5bc351a31974NotDimensionallyQualified" xlink:type="arc" order="79"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_OperatingExpensesPaidClassifiedAsOperatingActivities_019cfbfc-3f3f-7393-831c-3eb3d785cfbdNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_OperatingExpensesPaidClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_OperatingExpensesPaidClassifiedAsOperatingActivities_019cfbfc-3f3f-7393-831c-3eb3d785cfbdNotDimensionallyQualified" xlink:type="arc" order="80"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-797e-bfdf-6131589b8ff6NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-797e-bfdf-6131589b8ff6NotDimensionallyQualified" xlink:type="arc" order="81"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7039-ad8a-64c2fbe9e74cNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7039-ad8a-64c2fbe9e74cNotDimensionallyQualified" xlink:type="arc" order="82"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities_019cfbfc-3f3f-7ef1-88dc-fe6d8046c11aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities_019cfbfc-3f3f-7ef1-88dc-fe6d8046c11aNotDimensionallyQualified" xlink:type="arc" order="83"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities_019cfbfc-3e87-7860-a1c1-293802666b40NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities_019cfbfc-3e87-7860-a1c1-293802666b40NotDimensionallyQualified" xlink:type="arc" order="84"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7504-abcf-aa5d0fa17941NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7504-abcf-aa5d0fa17941NotDimensionallyQualified" xlink:type="arc" order="85"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019cfbfc-3f3f-7372-bbda-70b37c746ac6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019cfbfc-3f3f-7372-bbda-70b37c746ac6NotDimensionallyQualified" xlink:type="arc" order="86"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7ca4-a3c4-51d579da0ba8NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7ca4-a3c4-51d579da0ba8NotDimensionallyQualified" xlink:type="arc" order="87"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7fb8-9f92-3b45b095094dNotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7fb8-9f92-3b45b095094dNotDimensionallyQualified" xlink:type="arc" order="88"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019cfbfc-3f3f-74cc-b1b2-2590e1837855NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019cfbfc-3f3f-74cc-b1b2-2590e1837855NotDimensionallyQualified" xlink:type="arc" order="89"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ProceedsFromSettlementOfDefinedBenefitPension_019dd452-5f9a-7f48-a4f5-da9aca006635NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ProceedsFromSettlementOfDefinedBenefitPension"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_ProceedsFromSettlementOfDefinedBenefitPension_019dd452-5f9a-7f48-a4f5-da9aca006635NotDimensionallyQualified" xlink:type="arc" order="90"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashPaymentsFromOperatingActivities_019cfbfc-3f3f-7377-b0d6-ee107866d96cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCashPaymentsFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherCashPaymentsFromOperatingActivities_019cfbfc-3f3f-7377-b0d6-ee107866d96cNotDimensionallyQualified" xlink:type="arc" order="91"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7877-8064-a5b572937014NotDimensionallyQualified" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioFeesReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_threei_PortfolioFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7877-8064-a5b572937014NotDimensionallyQualified" xlink:type="arc" order="92"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_019cfbfc-3e87-73fa-bd99-b38003caeac3NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_019cfbfc-3e87-73fa-bd99-b38003caeac3NotDimensionallyQualified" xlink:type="arc" order="93"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_019cfbfc-3e87-7053-b622-cf6c8dc71088NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_019cfbfc-3e87-7053-b622-cf6c8dc71088NotDimensionallyQualified" xlink:type="arc" order="94"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory_019cfbfc-3e87-734c-86ec-53f7d8957c98NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory_019cfbfc-3e87-734c-86ec-53f7d8957c98NotDimensionallyQualified" xlink:type="arc" order="95"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory_019cfbfc-3e87-7c90-a13d-e496a438e57aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory_019cfbfc-3e87-7c90-a13d-e496a438e57aNotDimensionallyQualified" xlink:type="arc" order="96"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory_019cfbfc-3e87-7896-b49a-c13986ba0120NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory_019cfbfc-3e87-7896-b49a-c13986ba0120NotDimensionallyQualified" xlink:type="arc" order="97"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory_019cfbfc-3e87-7040-8529-68fa3c484c59NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory_019cfbfc-3e87-7040-8529-68fa3c484c59NotDimensionallyQualified" xlink:type="arc" order="98"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRevenueExplanatory_019cfbfc-3e87-7a24-8c1f-7125b1f339e7NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRevenueExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfRevenueExplanatory_019cfbfc-3e87-7a24-8c1f-7125b1f339e7NotDimensionallyQualified" xlink:type="arc" order="99"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_019cfbfc-3e87-7cc1-b327-1571c0f56f32NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_019cfbfc-3e87-7cc1-b327-1571c0f56f32NotDimensionallyQualified" xlink:type="arc" order="100"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTreasurySharesExplanatory_019cfbfc-3e87-7a59-ba1d-c1e758436964NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfTreasurySharesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfTreasurySharesExplanatory_019cfbfc-3e87-7a59-ba1d-c1e758436964NotDimensionallyQualified" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_019cfbfc-3e87-74b7-8a01-8ef94b2aaaeeNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_019cfbfc-3e87-74b7-8a01-8ef94b2aaaeeNotDimensionallyQualified" xlink:type="arc" order="102"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity_019cfbfc-3e87-7fb5-9da5-174db2e14c46NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity_019cfbfc-3e87-7fb5-9da5-174db2e14c46NotDimensionallyQualified" xlink:type="arc" order="103"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory_019cfbfc-3e87-7a96-9af6-c37bde935691NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory_019cfbfc-3e87-7a96-9af6-c37bde935691NotDimensionallyQualified" xlink:type="arc" order="104"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueMeasurementExplanatory_019cfbfc-3e87-790d-9ab2-eae98b206d2bNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfFairValueMeasurementExplanatory_019cfbfc-3e87-790d-9ab2-eae98b206d2bNotDimensionallyQualified" xlink:type="arc" order="105"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_019cfbfc-3e87-7a7e-8b63-f29c30db7dc5NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_019cfbfc-3e87-7a7e-8b63-f29c30db7dc5NotDimensionallyQualified" xlink:type="arc" order="106"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGoingConcernExplanatory_019cfbfc-3e87-70ca-9ad1-c40f0aee9655NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGoingConcernExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfGoingConcernExplanatory_019cfbfc-3e87-70ca-9ad1-c40f0aee9655NotDimensionallyQualified" xlink:type="arc" order="107"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory_019cfbfc-3e87-7d17-9b0e-ca612ca974d7NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory_019cfbfc-3e87-7d17-9b0e-ca612ca974d7NotDimensionallyQualified" xlink:type="arc" order="108"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CountryOfIncorporation_019cfbfc-3e87-71b7-a7cb-b681e7875fd9NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CountryOfIncorporation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CountryOfIncorporation_019cfbfc-3e87-71b7-a7cb-b681e7875fd9NotDimensionallyQualified" xlink:type="arc" order="109"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare_019cfbfc-3e87-7e92-b95c-bd922693b55dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare_019cfbfc-3e87-7e92-b95c-bd922693b55dNotDimensionallyQualified" xlink:type="arc" order="110"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMarketRiskExplanatory_019cfbfc-3e87-72fe-bc3b-0357394e54c6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfMarketRiskExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfMarketRiskExplanatory_019cfbfc-3e87-72fe-bc3b-0357394e54c6NotDimensionallyQualified" xlink:type="arc" order="111"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDividendsExplanatory_019cfbfc-3e87-7111-a09f-e42736eece03NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDividendsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfDividendsExplanatory_019cfbfc-3e87-7111-a09f-e42736eece03NotDimensionallyQualified" xlink:type="arc" order="112"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory_019cfbfc-3e87-7bd8-9a7f-dfb387dfcbbfNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory_019cfbfc-3e87-7bd8-9a7f-dfb387dfcbbfNotDimensionallyQualified" xlink:type="arc" order="113"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents_019cfbfc-3e87-77c2-98f6-580599ff9c85NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents_019cfbfc-3e87-77c2-98f6-580599ff9c85NotDimensionallyQualified" xlink:type="arc" order="114"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_019cfbfc-3e87-7ea7-bd8c-3779d4cbcbccNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_019cfbfc-3e87-7ea7-bd8c-3779d4cbcbccNotDimensionallyQualified" xlink:type="arc" order="115"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory_019cfbfc-3e87-74ce-a637-d42e1550bd22NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory_019cfbfc-3e87-74ce-a637-d42e1550bd22NotDimensionallyQualified" xlink:type="arc" order="116"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_019cfbfc-3e87-79c6-afe3-63c789f21029NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_019cfbfc-3e87-79c6-afe3-63c789f21029NotDimensionallyQualified" xlink:type="arc" order="117"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory_019cfbfc-3e87-7f51-b810-a9e101d55e80NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAuditorsRemunerationExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory_019cfbfc-3e87-7f51-b810-a9e101d55e80NotDimensionallyQualified" xlink:type="arc" order="118"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_019cfbfc-3e87-745d-a18f-cb172c1bbc4fNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_019cfbfc-3e87-745d-a18f-cb172c1bbc4fNotDimensionallyQualified" xlink:type="arc" order="119"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfExpensesExplanatory_019cfbfc-3e87-7211-8688-279407e2fd7cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfExpensesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfExpensesExplanatory_019cfbfc-3e87-7211-8688-279407e2fd7cNotDimensionallyQualified" xlink:type="arc" order="120"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_019e164e-cec6-733b-9d41-8613b4fab3c6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_019e164e-cec6-733b-9d41-8613b4fab3c6NotDimensionallyQualified" xlink:type="arc" order="121"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_019cfbfc-3e87-7f04-bab2-a6d5f91b9167NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_019cfbfc-3e87-7f04-bab2-a6d5f91b9167NotDimensionallyQualified" xlink:type="arc" order="122"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory_019cfbfc-3e87-7182-ac9a-634f8a62ddf6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory_019cfbfc-3e87-7182-ac9a-634f8a62ddf6NotDimensionallyQualified" xlink:type="arc" order="123"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory_019cfbfc-3e87-7430-bc5e-e77f3cd622ebNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory_019cfbfc-3e87-7430-bc5e-e77f3cd622ebNotDimensionallyQualified" xlink:type="arc" order="124"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_019cfbfc-3e87-7d46-91b1-ad6b359eb9d7NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_019cfbfc-3e87-7d46-91b1-ad6b359eb9d7NotDimensionallyQualified" xlink:type="arc" order="125"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfCreditRiskExplanatory_019cfbfc-3e87-7cb5-b3a0-eacdf8fc3295NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCreditRiskExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfCreditRiskExplanatory_019cfbfc-3e87-7cb5-b3a0-eacdf8fc3295NotDimensionallyQualified" xlink:type="arc" order="126"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners_019cfbfc-3e87-78ae-9c71-f08336803addNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners_019cfbfc-3e87-78ae-9c71-f08336803addNotDimensionallyQualified" xlink:type="arc" order="127"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_019cfbfc-3e87-7dfc-af94-3fdf0fc79363NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_019cfbfc-3e87-7dfc-af94-3fdf0fc79363NotDimensionallyQualified" xlink:type="arc" order="128"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_019cfbfc-3e87-7695-8720-526680ad7672NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_019cfbfc-3e87-7695-8720-526680ad7672NotDimensionallyQualified" xlink:type="arc" order="129"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory_019cfbfc-3e87-761e-b256-45cf4636e47cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory_019cfbfc-3e87-761e-b256-45cf4636e47cNotDimensionallyQualified" xlink:type="arc" order="130"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_019cfbfc-3e87-7e39-9885-0fe4fc7d8616NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_019cfbfc-3e87-7e39-9885-0fe4fc7d8616NotDimensionallyQualified" xlink:type="arc" order="131"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_019cfbfc-3e87-705c-9a73-5ac170ec7278NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_019cfbfc-3e87-705c-9a73-5ac170ec7278NotDimensionallyQualified" xlink:type="arc" order="132"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfLiquidityRiskExplanatory_019cfbfc-3e87-79d9-bfa0-b982874559bfNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfLiquidityRiskExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfLiquidityRiskExplanatory_019cfbfc-3e87-79d9-bfa0-b982874559bfNotDimensionallyQualified" xlink:type="arc" order="133"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LegalFormOfEntity_019cfbfc-3e87-7609-a7ab-a48c17aa6abeNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LegalFormOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_LegalFormOfEntity_019cfbfc-3e87-7609-a7ab-a48c17aa6abeNotDimensionallyQualified" xlink:type="arc" order="134"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue_019cfbfc-3e87-73be-bb69-5439a0f0f7e3NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue_019cfbfc-3e87-73be-bb69-5439a0f0f7e3NotDimensionallyQualified" xlink:type="arc" order="135"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_019cfbfc-3e87-7888-b5a7-c6dc476f2f6dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_019cfbfc-3e87-7888-b5a7-c6dc476f2f6dNotDimensionallyQualified" xlink:type="arc" order="136"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory_019cfbfc-3e87-75a2-ab74-d9da2ef8644eNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory_019cfbfc-3e87-75a2-ab74-d9da2ef8644eNotDimensionallyQualified" xlink:type="arc" order="137"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory_019cfbfc-3e87-7b22-9785-c0a5de2badfaNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory_019cfbfc-3e87-7b22-9785-c0a5de2badfaNotDimensionallyQualified" xlink:type="arc" order="138"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDeferredTaxesExplanatory_019cfbfc-3e87-7dd7-a969-da64b7422405NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfDeferredTaxesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfDeferredTaxesExplanatory_019cfbfc-3e87-7dd7-a969-da64b7422405NotDimensionallyQualified" xlink:type="arc" order="139"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory_019cfbfc-3e87-7dcb-baae-5ed2c9dbaa57NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory_019cfbfc-3e87-7dcb-baae-5ed2c9dbaa57NotDimensionallyQualified" xlink:type="arc" order="140"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_019cfbfc-3e87-79b3-9804-2078144407e9NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_019cfbfc-3e87-79b3-9804-2078144407e9NotDimensionallyQualified" xlink:type="arc" order="141"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory_019cfbfc-3e87-7304-b026-ded22ebce627NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory_019cfbfc-3e87-7304-b026-ded22ebce627NotDimensionallyQualified" xlink:type="arc" order="142"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIncomeTaxExplanatory_019cfbfc-3e87-7831-8cf5-c8cca70bcce5NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfIncomeTaxExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfIncomeTaxExplanatory_019cfbfc-3e87-7831-8cf5-c8cca70bcce5NotDimensionallyQualified" xlink:type="arc" order="143"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFirstTimeAdoptionExplanatory_019cfbfc-3e87-7cbf-8184-94eb165aac11NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFirstTimeAdoptionExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfFirstTimeAdoptionExplanatory_019cfbfc-3e87-7cbf-8184-94eb165aac11NotDimensionallyQualified" xlink:type="arc" order="144"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory_019cfbfc-3e87-7d74-a545-f6151add3ac1NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory_019cfbfc-3e87-7d74-a545-f6151add3ac1NotDimensionallyQualified" xlink:type="arc" order="145"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfCommitmentsExplanatory_019cfbfc-3e87-7f52-b288-2310b9173853NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfCommitmentsExplanatory_019cfbfc-3e87-7f52-b288-2310b9173853NotDimensionallyQualified" xlink:type="arc" order="146"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBorrowingsExplanatory_019cfbfc-3e87-7256-9eed-8d6043725e0dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBorrowingsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfBorrowingsExplanatory_019cfbfc-3e87-7256-9eed-8d6043725e0dNotDimensionallyQualified" xlink:type="arc" order="147"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory_019cfbfc-3e87-7b69-be7e-9945c0be8843NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfBasisOfConsolidationExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory_019cfbfc-3e87-7b69-be7e-9945c0be8843NotDimensionallyQualified" xlink:type="arc" order="148"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_019cfbfc-3e87-760b-b948-2046db860307NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_019cfbfc-3e87-760b-b948-2046db860307NotDimensionallyQualified" xlink:type="arc" order="149"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare_019cfbfc-3e87-71e8-9400-6934eb764504NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare_019cfbfc-3e87-71e8-9400-6934eb764504NotDimensionallyQualified" xlink:type="arc" order="150"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEarningsPerShareExplanatory_019cfbfc-3e87-7653-a5f4-af04e64e378dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfEarningsPerShareExplanatory_019cfbfc-3e87-7653-a5f4-af04e64e378dNotDimensionallyQualified" xlink:type="arc" order="151"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_019cfbfc-3e87-7b19-b46d-b020a543b04aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_019cfbfc-3e87-7b19-b46d-b020a543b04aNotDimensionallyQualified" xlink:type="arc" order="152"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory_019cfbfc-3e87-7b34-9906-2d31552fc062NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory_019cfbfc-3e87-7b34-9906-2d31552fc062NotDimensionallyQualified" xlink:type="arc" order="153"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory_019cfbfc-3e87-725e-985e-7eedf4ccfc5dNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory_019cfbfc-3e87-725e-985e-7eedf4ccfc5dNotDimensionallyQualified" xlink:type="arc" order="154"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_019cfbfc-3e87-732e-b2cd-04b10238f7f2NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_019cfbfc-3e87-732e-b2cd-04b10238f7f2NotDimensionallyQualified" xlink:type="arc" order="155"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PrincipalPlaceOfBusiness_019cfbfc-3e87-780c-9682-9e7ca225547cNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PrincipalPlaceOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PrincipalPlaceOfBusiness_019cfbfc-3e87-780c-9682-9e7ca225547cNotDimensionallyQualified" xlink:type="arc" order="156"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory_019cfbfc-3e87-7e45-bf20-0011ec6be386NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory_019cfbfc-3e87-7e45-bf20-0011ec6be386NotDimensionallyQualified" xlink:type="arc" order="157"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory_019cfbfc-3e87-7be5-800c-657a7759dc2aNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory_019cfbfc-3e87-7be5-800c-657a7759dc2aNotDimensionallyQualified" xlink:type="arc" order="158"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory_019cfbfc-3e87-7333-be8f-cb4072489fd6NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory_019cfbfc-3e87-7333-be8f-cb4072489fd6NotDimensionallyQualified" xlink:type="arc" order="159"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DomicileOfEntity_019cfbfc-3e87-7773-94ba-00a4b218ca4eNotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DomicileOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DomicileOfEntity_019cfbfc-3e87-7773-94ba-00a4b218ca4eNotDimensionallyQualified" xlink:type="arc" order="160"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfContingentLiabilitiesExplanatory_019cfbfc-3e87-790a-90b8-62d8426cba08NotDimensionallyQualified" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DisclosureOfContingentLiabilitiesExplanatory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DisclosureOfContingentLiabilitiesExplanatory_019cfbfc-3e87-790a-90b8-62d8426cba08NotDimensionallyQualified" xlink:type="arc" order="161"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.3i.com/role/Anchoring" xlink:type="simple" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#Anchoring"/>
  <link:definitionLink xlink:role="http://www.3i.com/role/Anchoring" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7de6-bcf3-78ea44c51c9b" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_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"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_AmountsPaidToInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-7de6-bcf3-78ea44c51c9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-77ac-b86b-a32aa672502b" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_AmountsReceivedFromInvestmentEntitySubsidiariesClassifiedAsOperatingActivities_019cfbfc-3e87-77ac-b86b-a32aa672502b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-760b-956b-bcd9b6f09c57" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-760b-956b-bcd9b6f09c57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-76fd-85a9-edbcd33b225b" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesPayable"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-76fd-85a9-edbcd33b225b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7315-bcda-f6b0c60d1e05" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FeeAndCommissionIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FeeAndCommissionIncome"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_FeeAndCommissionIncome" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-7315-bcda-f6b0c60d1e05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-785c-a5bc-0f5621c8c2e8" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_CarriedInterestAndPerformanceFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-785c-a5bc-0f5621c8c2e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7f8e-8cb0-56034b9adcd5" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CurrentCarriedInterestAndPerformanceFeesPayable"/>
    <link:loc xlink:type="locator" xlink:label="loc_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"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_threei_CurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-7f8e-8cb0-56034b9adcd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_CurrentCarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-77b6-8aa4-76b71c68f2a6" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_CurrentCarriedInterestAndPerformanceFeesReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_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"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_threei_CurrentCarriedInterestAndPerformanceFeesReceivable_019cfbfc-3e87-77b6-8aa4-76b71c68f2a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ExerciseOfShareAwards_019cfbfc-3e87-7dd9-912a-7f4a10953f38" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ExerciseOfShareAwards"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInEquity" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ChangesInEquity"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_ChangesInEquity" xlink:to="loc_threei_ExerciseOfShareAwards_019cfbfc-3e87-7dd9-912a-7f4a10953f38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FairValueMovementsOnInvestmentEntitySubsidiaries_019cfbfc-3e87-7b54-ad31-90fc50ce9218" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FairValueMovementsOnInvestmentEntitySubsidiaries"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:to="loc_threei_FairValueMovementsOnInvestmentEntitySubsidiaries_019cfbfc-3e87-7b54-ad31-90fc50ce9218" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FeesReceivableFromExternalFunds_019cfbfc-3e87-763a-954d-5a5611f6b16c" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FeesReceivableFromExternalFunds"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PortfolioAndOtherManagementFeeIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PortfolioAndOtherManagementFeeIncome"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_PortfolioAndOtherManagementFeeIncome" xlink:to="loc_threei_FeesReceivableFromExternalFunds_019cfbfc-3e87-763a-954d-5a5611f6b16c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities_019cfbfc-3e87-7434-b1b2-64a4825789ff" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_FeesReceivedFromExternalFundsClassifiedAsOperatingActivities_019cfbfc-3e87-7434-b1b2-64a4825789ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities_019cfbfc-3e87-7504-a846-cdc837326b18" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_NetCashOwFromDerivativesClassifiedAsOperatingActivities_019cfbfc-3e87-7504-a846-cdc837326b18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_NonCurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-73a8-87f6-067c9e44ac75" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_NonCurrentCarriedInterestAndPerformanceFeesPayable"/>
    <link:loc xlink:type="locator" xlink:label="loc_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"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="loc_threei_NonCurrentCarriedInterestAndPerformanceFeesPayable_019cfbfc-3e87-73a8-87f6-067c9e44ac75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_OperatingExpensesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-7526-a6e8-8e27246b0390" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_OperatingExpensesPaidClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_OperatingExpensesPaidClassifiedAsOperatingActivities_019cfbfc-3e87-7526-a6e8-8e27246b0390" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7739-9b94-20fce3ac90e7" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_PortfolioDividendsReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7739-9b94-20fce3ac90e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7ed3-9b80-331edd939de4" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioFeesReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_PortfolioFeesReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7ed3-9b80-331edd939de4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PortfolioInterestReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7c17-a27e-951a5765321d" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PortfolioInterestReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_PortfolioInterestReceivedClassifiedAsOperatingActivities_019cfbfc-3e87-7c17-a27e-951a5765321d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-70cb-9210-b3ffe453d57a" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_ProceedsFromInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-70cb-9210-b3ffe453d57a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ProceedsFromSettlementOfDefinedBenefitPension_019e1bff-576b-7c2b-a465-cb25d489dbb8" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ProceedsFromSettlementOfDefinedBenefitPension"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InflowsOfCashFromInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InflowsOfCashFromInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_InflowsOfCashFromInvestingActivities" xlink:to="loc_threei_ProceedsFromSettlementOfDefinedBenefitPension_019e1bff-576b-7c2b-a465-cb25d489dbb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-7365-a0fa-16a80205aefc" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_threei_PurchaseOfInvestmentsClassifiedAsOperatingActivities_019cfbfc-3e87-7365-a0fa-16a80205aefc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_QuotedInvestments_019cfbfc-3e87-77ce-ba54-71df5f371270" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_QuotedInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognition" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognition"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_NoncurrentFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognition" xlink:to="loc_threei_QuotedInvestments_019cfbfc-3e87-77ce-ba54-71df5f371270" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_ReleaseOnExerciseForfeitureOfShareAwards_019cfbfc-3e87-7162-ba26-5ee1e11de025" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_ReleaseOnExerciseForfeitureOfShareAwards"/>
    <link:loc xlink:type="locator" xlink:label="loc_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"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:to="loc_threei_ReleaseOnExerciseForfeitureOfShareAwards_019cfbfc-3e87-7162-ba26-5ee1e11de025" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_UnquotedInvestments_019cfbfc-3e87-7b0f-a3ba-332746839878" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_UnquotedInvestments"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_NoncurrentFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognition" xlink:to="loc_threei_UnquotedInvestments_019cfbfc-3e87-7b0f-a3ba-332746839878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_threei_UnrealisedProfitsOnTheRevaluationOfInvestments_019cfbfc-3e87-74b0-ad19-6e9df67f2ba2" xlink:href="35GDVHRBMFE7NWATNM84-2026-03-31.xsd#threei_UnrealisedProfitsOnTheRevaluationOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:to="loc_threei_UnrealisedProfitsOnTheRevaluationOfInvestments_019cfbfc-3e87-74b0-ad19-6e9df67f2ba2" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
