Meaning of “in vitro” in the English Dictionary

british dictionary

"in vitro" in British English

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in vitroadjective [ before noun ], adverb

uk /ˌɪn ˈviː.trəʊ/ us /ˌɪn ˈviː.troʊ/

happening outside the body in artificial conditions, often in a test tube:

Scientists are studying these cells in vitro.

(Definition of “in vitro” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)