Definition of in vivo in English:

in vivo

Syllabification: in vi·vo
Pronunciation: /ˌin ˈvēvō

adverb& adjective

(Of a process) performed or taking place in a living organism: [as adverb]: fluid transport was measured in vivo [as adjective]: in vivo studies in animals The opposite of in vitro.
More example sentences
  • Resin plates were contaminated in vivo upon intraoral use by 10 volunteers for 7 nights.
  • An in vivo human bronchial xenograft model system was used to simultaneously analyze electrolyte and fluid transport defects in fully differentiated human cystic fibrosis (CF) and non-CF proximal airways.


early 20th century: Latin, 'in a living thing'.

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