in vivo

adjective

Within a living organism.

Opposite
ex vivoin vitro
OriginLatin in vīvō →
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Meanings

adjective
  1. Within a living organism.
adverb
  1. Within a living organism.

Synonyms & antonyms

Opposite
ex vivo

adjectiveof a biological process occurring within a living organism

Opposite
in vitro

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinin vīvō
  2. Englishin vivo

Borrowed from Latin in vīvō.

More words from Latin

Full word history & related roots →
Cite this entry
APA

in vivo. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/in%20vivo

MLA

“in vivo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/in%20vivo. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “in vivo,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/in%20vivo.

Source: in vivo on Wiktionary, CC BY-SA 4.0.