raison d'être(redirected from raisons d'être)
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Related to raisons d'être: Raison d etre
The fundamental reason for something or someone to exist; the sole or most important purpose for someone or something. (From French, literally "reason for being.") I know it's something of a cliché, but my children really are my raison d'être. We've always prized serious social commentary as our magazine's raison d'être.
See also: raison