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English definition of “rationale”

rationale

noun [C or U] uk   /ˌræʃ.əˈnɑːl/ us    /-ˈnæl/ formal
the reasons or intentions for a particular set of thoughts or actions: I don't understand the rationale behind the council's housing policy.
(Definition of rationale from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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