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English definition of “pre-exist”

pre-exist

verb [I or T] uk   /ˌpriː.ɪɡˈzɪst/ formal us  
to exist before something else: Dinosaurs pre-existed human beings by many millions of years.Existing and being
pre-existing
adjective uk   /ˌpriː.ɪɡˈzɪs.tɪŋ/ us  
a pre-existing medical conditionBefore, after and alreadyAfter and behind
(Definition of pre-exist from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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