a prioriadjective [ before noun ]uk /ˌeɪ praɪˈɔː.raɪ/ /ˌɑː priːˈɔː.ri/ us /ˌɑː priːˈɔːr.aɪ/ /ˌeɪ priːˈɔːr.aɪ/ formal
adverb uk us
(Definition of “a priori” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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