/ ɪn ˈviːtrəʊ; NAmE ˈviːtroʊ/ adjective
(from Latin , biology ) ( of processes ) taking place outside a living body, in scientific apparatus :
in vitro experiments
the development of in vitro fertilization
—see also IVF
► in vitro adverb :
an egg fertilized in vitro
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WORD ORIGIN
Latin , literally in glass .