﻿<?xml version="1.0" encoding="utf-8"?>
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.xbrl.org/2003/linkbase">
  <roleRef roleURI="http://halma.com/xbrl/2023/roles/ProfitOrLoss" xlink:href="halma-2024-03-31.xsd#ProfitOrLoss" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="https://www.esma.europa.eu/xbrl/role/cor/ifrs-dim_role-990000" xlink:href="https://www.esma.europa.eu/taxonomy/2022-03-24/esef_cor.xsd#ifrs-dim_role-990000" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://halma.com/xbrl/2023/roles/Anchoring" xlink:href="halma-2024-03-31.xsd#Anchoring" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:href="https://www.esma.europa.eu/taxonomy/2022-03-24/esef_cor.xsd#esef_role-999999" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://halma.com/xbrl/2023/roles/StatementOfChangesInEquity" xlink:href="halma-2024-03-31.xsd#StatementOfChangesInEquity" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <definitionLink xlink:role="http://halma.com/xbrl/2023/roles/ProfitOrLoss" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeStatementAbstract" xlink:label="ifrs-full_IncomeStatementAbstract" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitOrLossTable" xlink:label="halma_ProfitOrLossTable" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ConsolidatedIncomeStatementAxis" xlink:label="halma_ConsolidatedIncomeStatementAxis" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_AdjustedMember" xlink:label="halma_AdjustedMember" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_AdjustmentsMember" xlink:label="halma_AdjustmentsMember" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_TotalMember" xlink:label="halma_TotalMember" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitOrLossLineItems" xlink:label="halma_ProfitOrLossLineItems" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Revenue" xlink:label="ifrs-full_Revenue" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitOnDisposalOfOperations" xlink:label="halma_ProfitOnDisposalOfOperations" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitBeforeInterestAndTaxation" xlink:label="halma_ProfitBeforeInterestAndTaxation" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncome" xlink:label="ifrs-full_FinanceIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts" xlink:label="ifrs-full_FinanceCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:label="ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations" xlink:label="ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PaidAndProposed" xlink:label="halma_PaidAndProposed" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PaidAndProposedPerShare" xlink:label="halma_PaidAndProposedPerShare" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_IncomeStatementAbstract" xlink:to="halma_ProfitOrLossTable" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" priority="1" xbrldt:contextElement="scenario" xbrldt:closed="true" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossTable" xlink:to="halma_ConsolidatedIncomeStatementAxis" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ConsolidatedIncomeStatementAxis" xlink:to="halma_AdjustedMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_AdjustedMember" xlink:to="halma_AdjustmentsMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_AdjustedMember" xlink:to="halma_TotalMember" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_IncomeStatementAbstract" xlink:to="halma_ProfitOrLossLineItems" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_Revenue" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ProfitLossFromOperatingActivities" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="halma_ProfitOnDisposalOfOperations" order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="halma_ProfitBeforeInterestAndTaxation" order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_FinanceIncome" order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_FinanceCosts" order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ProfitLossBeforeTax" order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations" order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ProfitLoss" order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent" order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations" order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="halma_PaidAndProposed" order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOrLossLineItems" xlink:to="halma_PaidAndProposedPerShare" order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/cor/ifrs-dim_role-990000" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ConsolidatedIncomeStatementAxis" xlink:label="halma_ConsolidatedIncomeStatementAxis" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_TotalMember" xlink:label="halma_TotalMember" />
    <definitionArc xlink:type="arc" xlink:from="halma_ConsolidatedIncomeStatementAxis" xlink:to="halma_TotalMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="http://halma.com/xbrl/2023/roles/Anchoring" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitOnDisposalOfOperations" xlink:label="halma_ProfitOnDisposalOfOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnDisposalsOfNoncurrentAssets" xlink:label="ifrs-full_GainsLossesOnDisposalsOfNoncurrentAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ProfitBeforeInterestAndTaxation" xlink:label="halma_ProfitBeforeInterestAndTaxation" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PaidAndProposed" xlink:label="halma_PaidAndProposed" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" xlink:label="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PaidAndProposedPerShare" xlink:label="halma_PaidAndProposedPerShare" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" xlink:label="halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" xlink:label="ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_GainsLossesRelatingToNetInvestmentHedges" xlink:label="halma_GainsLossesRelatingToNetInvestmentHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_InterestInAssociatesAndOtherInvestments" xlink:label="halma_InterestInAssociatesAndOtherInvestments" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" xlink:label="ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DeferredTaxOnShareBasedPaymentTransactions" xlink:label="halma_DeferredTaxOnShareBasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" xlink:label="halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ChangesInEquity" xlink:label="ifrs-full_ChangesInEquity" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PerformanceSharePlanAwardsVested" xlink:label="halma_PerformanceSharePlanAwardsVested" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsRecognisedAsDistributionsToNoncontrollingInterests" xlink:label="ifrs-full_DividendsRecognisedAsDistributionsToNoncontrollingInterests" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_NonControllingInterestDisposed" xlink:label="halma_NonControllingInterestDisposed" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_MarketValueOfOwnShares" xlink:label="halma_MarketValueOfOwnShares" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_CarryingValueOfNetInvestmentHedges" xlink:label="halma_CarryingValueOfNetInvestmentHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" xlink:label="halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" xlink:label="halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_LoanArrangementFeesClassifiedAsFinancingActivities" xlink:label="halma_LoanArrangementFeesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" xlink:label="halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" />
    <definitionArc xlink:type="arc" xlink:from="halma_ProfitOnDisposalOfOperations" xlink:to="ifrs-full_GainsLossesOnDisposalsOfNoncurrentAssets" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="halma_ProfitOnDisposalOfOperations" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="halma_ProfitBeforeInterestAndTaxation" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" xlink:to="halma_PaidAndProposed" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_PaidAndProposed" xlink:to="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" xlink:to="halma_PaidAndProposedPerShare" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_PaidAndProposedPerShare" xlink:to="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments" xlink:to="halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" xlink:to="ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" xlink:to="halma_GainsLossesRelatingToNetInvestmentHedges" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="halma_InterestInAssociatesAndOtherInvestments" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" xlink:to="halma_DeferredTaxOnShareBasedPaymentTransactions" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" xlink:to="halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ChangesInEquity" xlink:to="halma_PerformanceSharePlanAwardsVested" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_DividendsRecognisedAsDistributionsToNoncontrollingInterests" xlink:to="halma_NonControllingInterestDisposed" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="halma_MarketValueOfOwnShares" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="halma_CarryingValueOfNetInvestmentHedges" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:to="halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:to="halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="halma_LoanArrangementFeesClassifiedAsFinancingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://www.esma.europa.eu/taxonomy/2022-03-24/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:label="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" xlink:label="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" xlink:label="halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:label="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_GainsLossesRelatingToNetInvestmentHedges" xlink:label="halma_GainsLossesRelatingToNetInvestmentHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Goodwill" xlink:label="ifrs-full_Goodwill" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_IntangibleAssetsOtherThanGoodwill" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="ifrs-full_PropertyPlantAndEquipment" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_InterestInAssociatesAndOtherInvestments" xlink:label="halma_InterestInAssociatesAndOtherInvestments" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan" xlink:label="ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssetsNoncurrent" xlink:label="ifrs-full_CurrentTaxAssetsNoncurrent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Inventories" xlink:label="ifrs-full_Inventories" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssetsCurrent" xlink:label="ifrs-full_CurrentTaxAssetsCurrent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndBankBalancesAtCentralBanks" xlink:label="ifrs-full_CashAndBankBalancesAtCentralBanks" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentDerivativeFinancialAssets" xlink:label="ifrs-full_CurrentDerivativeFinancialAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="ifrs-full_TradeAndOtherCurrentPayables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" xlink:label="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="ifrs-full_CurrentLeaseLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentProvisions" xlink:label="ifrs-full_CurrentProvisions" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="ifrs-full_CurrentLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssetsLiabilities" xlink:label="ifrs-full_CurrentAssetsLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermBorrowings" xlink:label="ifrs-full_LongtermBorrowings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="ifrs-full_NoncurrentLeaseLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:label="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentPayables" xlink:label="ifrs-full_NoncurrentPayables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherLongtermProvisions" xlink:label="ifrs-full_OtherLongtermProvisions" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="ifrs-full_NoncurrentLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetAssetsLiabilities" xlink:label="ifrs-full_NetAssetsLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SharePremium" xlink:label="ifrs-full_SharePremium" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasuryShares" xlink:label="ifrs-full_TreasuryShares" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CapitalRedemptionReserve" xlink:label="ifrs-full_CapitalRedemptionReserve" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfCashFlowHedges" xlink:label="ifrs-full_ReserveOfCashFlowHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherReserves" xlink:label="ifrs-full_OtherReserves" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetainedEarnings" xlink:label="ifrs-full_RetainedEarnings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParent" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncontrollingInterests" xlink:label="ifrs-full_NoncontrollingInterests" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_MarketValueOfOwnShares" xlink:label="halma_MarketValueOfOwnShares" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_CarryingValueOfNetInvestmentHedges" xlink:label="halma_CarryingValueOfNetInvestmentHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" xlink:label="halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" xlink:label="halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:label="ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsForDevelopmentProjectExpenditure" xlink:label="ifrs-full_PaymentsForDevelopmentProjectExpenditure" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:label="ifrs-full_InterestReceivedClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" xlink:label="ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:label="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_LoanArrangementFeesClassifiedAsFinancingActivities" xlink:label="halma_LoanArrangementFeesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" xlink:label="halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:label="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:label="ifrs-full_RepaymentsOfBondsNotesAndDebentures" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfIFRSCompliance" xlink:label="ifrs-full_StatementOfIFRSCompliance" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xlink:label="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" xlink:label="ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfUseOfAlternativePerformanceMeasuresAPMs" xlink:label="halma_DisclosureOfUseOfAlternativePerformanceMeasuresAPMs" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:label="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DescriptionOfAccountingPolicyForOperatingProfit" xlink:label="halma_DescriptionOfAccountingPolicyForOperatingProfit" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DescriptionOfAccountingPolicyForAdjustingItems" xlink:label="halma_DescriptionOfAccountingPolicyForAdjustingItems" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinanceCostsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinanceCostsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" xlink:label="ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DescriptionOfAccountingPolicyForContractAssetsAndLiabilties" xlink:label="halma_DescriptionOfAccountingPolicyForContractAssetsAndLiabilties" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DescriptionOfAccountingPolicyForCostsToObtainOrFulfilAContract" xlink:label="halma_DescriptionOfAccountingPolicyForCostsToObtainOrFulfilAContract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRevenueExplanatory" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:label="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSegmentsMajorCustomersExplanatory" xlink:label="ifrs-full_DisclosureOfSegmentsMajorCustomersExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfAlternativePerformanceMeasures" xlink:label="halma_DisclosureOfAlternativePerformanceMeasures" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfInterestIncomeExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinanceCostExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceCostExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfInterestExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xlink:label="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:label="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" xlink:label="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:label="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:label="ifrs-full_DisclosureOfIncomeTaxExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDividendsExplanatory" xlink:label="ifrs-full_DisclosureOfDividendsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" xlink:label="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" xlink:label="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGoodwillExplanatory" xlink:label="ifrs-full_DisclosureOfGoodwillExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:label="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:label="ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInventoriesExplanatory" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherAssetsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDeferredIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredIncomeExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfContractBalances" xlink:label="halma_DisclosureOfContractBalances" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfProvisionsExplanatory" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherNoncurrentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherNoncurrentLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory" xlink:label="ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIssuedCapitalExplanatory" xlink:label="ifrs-full_DisclosureOfIssuedCapitalExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:label="ifrs-full_DisclosureOfBusinessCombinationsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCashFlowStatementExplanatory" xlink:label="ifrs-full_DisclosureOfCashFlowStatementExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory" xlink:label="ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfMarketRiskExplanatory" xlink:label="ifrs-full_DisclosureOfMarketRiskExplanatory" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfForeignCurrencyRisk" xlink:label="halma_DisclosureOfForeignCurrencyRisk" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfInterestRateRisk" xlink:label="halma_DisclosureOfInterestRateRisk" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCreditRiskExplanatory" xlink:label="ifrs-full_DisclosureOfCreditRiskExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLiquidityRiskExplanatory" xlink:label="ifrs-full_DisclosureOfLiquidityRiskExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfHedgeAccountingExplanatory" xlink:label="ifrs-full_DisclosureOfHedgeAccountingExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLeasesExplanatory" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDefinedContributionPlansExplanatory" xlink:label="ifrs-full_DisclosureOfDefinedContributionPlansExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DisclosureOfDisposalOfOperations" xlink:label="halma_DisclosureOfDisposalOfOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:label="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfUltimateParentOfGroup" xlink:label="ifrs-full_NameOfUltimateParentOfGroup" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LegalFormOfEntity" xlink:label="ifrs-full_LegalFormOfEntity" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CountryOfIncorporation" xlink:label="ifrs-full_CountryOfIncorporation" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DomicileOfEntity" xlink:label="ifrs-full_DomicileOfEntity" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:label="ifrs-full_AddressOfRegisteredOfficeOfEntity" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_UnrealisedLossesGainsInTheFairValueOfEquityInvestmentsAtFairValueThroughOtherComprehensiveIncome" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslationOfForeignOperationsAndHedgesOfNetInvestmentsInForeignOperations" order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_GainsLossesRelatingToNetInvestmentHedges" order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Goodwill" order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IntangibleAssetsOtherThanGoodwill" order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PropertyPlantAndEquipment" order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_InterestInAssociatesAndOtherInvestments" order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentRecognisedAssetsDefinedBenefitPlan" order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxAssetsNoncurrent" order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredTaxAssets" order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentAssets" order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Inventories" order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_TradeAndOtherCurrentReceivables" order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxAssetsCurrent" order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashAndBankBalancesAtCentralBanks" order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentDerivativeFinancialAssets" order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentAssets" order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Assets" order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_TradeAndOtherCurrentPayables" order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentLeaseLiabilities" order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentProvisions" order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxLiabilitiesCurrent" order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentDerivativeFinancialLiabilities" order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentLiabilities" order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentAssetsLiabilities" order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_LongtermBorrowings" order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentLeaseLiabilities" order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentPayables" order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherLongtermProvisions" order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredTaxLiabilities" order="38" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentLiabilities" order="39" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Liabilities" order="40" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NetAssetsLiabilities" order="41" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IssuedCapital" order="42" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_SharePremium" order="43" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_TreasuryShares" order="44" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CapitalRedemptionReserve" order="45" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ReserveOfCashFlowHedges" order="46" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" order="47" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherReserves" order="48" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RetainedEarnings" order="49" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EquityAttributableToOwnersOfParent" order="50" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncontrollingInterests" order="51" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" order="52" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_MarketValueOfOwnShares" order="53" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_CarryingValueOfNetInvestmentHedges" order="54" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" order="55" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" order="56" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_PurchaseOfComputerSoftwareClassifiedAsInvestingActivities" order="57" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_PurchaseOfOtherIntangiblesClassifiedAsInvestingActivities" order="58" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" order="59" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PaymentsForDevelopmentProjectExpenditure" order="60" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InterestReceivedClassifiedAsInvestingActivities" order="61" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" order="62" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" order="63" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" order="64" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities" order="65" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" order="66" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" order="67" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InterestPaidClassifiedAsFinancingActivities" order="68" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_LoanArrangementFeesClassifiedAsFinancingActivities" order="69" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" order="70" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" order="71" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_RepaymentOfAcquiredDebtOnAcquisitionClassifiedAsFinancingActivities" order="72" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" order="73" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RepaymentsOfBondsNotesAndDebentures" order="74" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" order="75" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities" order="76" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" order="77" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashAndCashEquivalents" order="78" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" order="79" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" order="80" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" order="81" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" order="82" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_StatementOfIFRSCompliance" order="83" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" order="84" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" order="85" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfUseOfAlternativePerformanceMeasuresAPMs" order="86" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfGoingConcernExplanatory" order="87" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" order="88" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" order="89" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" order="90" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" order="91" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" order="92" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" order="93" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" order="94" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" order="95" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" order="96" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" order="97" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" order="98" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DescriptionOfAccountingPolicyForOperatingProfit" order="99" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DescriptionOfAccountingPolicyForAdjustingItems" order="100" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants" order="101" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory" order="102" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinanceCostsExplanatory" order="103" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory" order="104" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" order="105" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" order="106" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" order="107" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" order="108" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" order="109" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" order="110" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" order="111" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" order="112" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" order="113" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" order="114" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" order="115" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" order="116" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents" order="117" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DescriptionOfAccountingPolicyForContractAssetsAndLiabilties" order="118" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DescriptionOfAccountingPolicyForCostsToObtainOrFulfilAContract" order="119" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory" order="120" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" order="121" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" order="122" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory" order="123" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" order="124" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" order="125" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" order="126" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" order="127" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" order="128" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory" order="129" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" order="130" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfRevenueExplanatory" order="131" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" order="132" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfGeographicalAreasExplanatory" order="133" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfSegmentsMajorCustomersExplanatory" order="134" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfEarningsPerShareExplanatory" order="135" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfAlternativePerformanceMeasures" order="136" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory" order="137" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFinanceIncomeExplanatory" order="138" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory" order="139" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInterestIncomeExplanatory" order="140" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFinanceCostExplanatory" order="141" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInterestExpenseExplanatory" order="142" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" order="143" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory" order="144" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" order="145" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" order="146" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" order="147" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" order="148" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfIncomeTaxExplanatory" order="149" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDividendsExplanatory" order="150" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare" order="151" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare" order="152" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners" order="153" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" order="154" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfGoodwillExplanatory" order="155" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" order="156" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" order="157" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" order="158" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" order="159" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" order="160" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfInventoriesExplanatory" order="161" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" order="162" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory" order="163" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfOtherAssetsExplanatory" order="164" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" order="165" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory" order="166" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDeferredIncomeExplanatory" order="167" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" order="168" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfOtherCurrentLiabilitiesExplanatory" order="169" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfContractBalances" order="170" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" order="171" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfBorrowingsExplanatory" order="172" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfProvisionsExplanatory" order="173" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfOtherNoncurrentLiabilitiesExplanatory" order="174" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDeferredTaxesExplanatory" order="175" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory" order="176" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" order="177" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfIssuedCapitalExplanatory" order="178" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" order="179" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfBusinessCombinationsExplanatory" order="180" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfCashFlowStatementExplanatory" order="181" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" order="182" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory" order="183" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfMarketRiskExplanatory" order="184" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfForeignCurrencyRisk" order="185" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfInterestRateRisk" order="186" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfCreditRiskExplanatory" order="187" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfLiquidityRiskExplanatory" order="188" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" order="189" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" order="190" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" order="191" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfHedgeAccountingExplanatory" order="192" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfLeasesExplanatory" order="193" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" order="194" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDefinedContributionPlansExplanatory" order="195" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" order="196" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="halma_DisclosureOfDisposalOfOperations" order="197" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" order="198" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" order="199" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" order="200" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfRelatedPartyExplanatory" order="201" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" order="202" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DisclosureOfCommitmentsExplanatory" order="203" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" order="204" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfUltimateParentOfGroup" order="205" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_LegalFormOfEntity" order="206" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CountryOfIncorporation" order="207" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DomicileOfEntity" order="208" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AddressOfRegisteredOfficeOfEntity" order="209" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:label="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="http://halma.com/xbrl/2023/roles/StatementOfChangesInEquity" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityMember" xlink:label="ifrs-full_EquityMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapitalMember" xlink:label="ifrs-full_IssuedCapitalMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SharePremiumMember" xlink:label="ifrs-full_SharePremiumMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasurySharesMember" xlink:label="ifrs-full_TreasurySharesMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CapitalRedemptionReserveMember" xlink:label="ifrs-full_CapitalRedemptionReserveMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfCashFlowHedgesMember" xlink:label="ifrs-full_ReserveOfCashFlowHedgesMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherReservesMember" xlink:label="ifrs-full_OtherReservesMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetainedEarningsMember" xlink:label="ifrs-full_RetainedEarningsMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncontrollingInterestsMember" xlink:label="ifrs-full_NoncontrollingInterestsMember" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="ifrs-full_OtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaid" xlink:label="ifrs-full_DividendsPaid" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_DeferredTaxOnShareBasedPaymentTransactions" xlink:label="halma_DeferredTaxOnShareBasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" xlink:label="halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfTreasuryShares" xlink:label="ifrs-full_PurchaseOfTreasuryShares" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_PerformanceSharePlanAwardsVested" xlink:label="halma_PerformanceSharePlanAwardsVested" />
    <loc xlink:type="locator" xlink:href="halma-2024-03-31.xsd#halma_NonControllingInterestDisposed" xlink:label="halma_NonControllingInterestDisposed" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" xlink:to="ifrs-full_StatementOfChangesInEquityTable" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" priority="1" xbrldt:contextElement="scenario" xbrldt:closed="true" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityTable" xlink:to="ifrs-full_ComponentsOfEquityAxis" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ComponentsOfEquityAxis" xlink:to="ifrs-full_EquityMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_IssuedCapitalMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_SharePremiumMember" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_TreasurySharesMember" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_CapitalRedemptionReserveMember" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_ReserveOfCashFlowHedgesMember" order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_OtherReservesMember" order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_RetainedEarningsMember" order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_NoncontrollingInterestsMember" order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" xlink:to="ifrs-full_StatementOfChangesInEquityLineItems" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_Equity" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ProfitLoss" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_OtherComprehensiveIncome" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ComprehensiveIncome" order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_DividendsPaid" order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="halma_DeferredTaxOnShareBasedPaymentTransactions" order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="halma_ExcessTaxDeductionsRelatedToShareBasedPaymentsOnVestedAwards" order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_PurchaseOfTreasuryShares" order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="halma_PerformanceSharePlanAwardsVested" order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_OtherReservesMember" xlink:to="ifrs-full_ReserveOfCashFlowHedgesMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_OtherReservesMember" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="halma_NonControllingInterestDisposed" order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
  </definitionLink>
</linkbase>