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English definition of “raison d'être”

raison d'être

noun [C usually singular] uk   /ˌrez.ɑ̃ːˈdet.rə/ us    /ˌreɪ.zɑːn-/ (plural raisons d'être)
a reason for existence: Her job is her raison d'être.Goals and purposes
(Definition of raison d'être from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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