in vivo

[ in -vee-voh ]

/ ɪn ˈvi voʊ /

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adverb, adjective

(of a biological process) occurring or made to occur within a living organism or natural setting.

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Compare in vitro.

Origin of in vivo

First recorded in 1900–05, in vivo is from Latin in vīvō “in (something) alive”

Words nearby in vivo

invite, invitee, inviting, in vitro, in vitro fertilization, in vivo, in vivo fertilization, invocate, invocation, invoice, invoke

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use in vivo in a sentence

This is a guy who has his son-in-law clean his eyeglasses, for crying out loud.
Will Chris Christie Regret His Cowboy Hug?|Matt Lewis|January 5, 2015|DAILY BEAST
Her travel clique has been known to arrive at an airport, bags packed, passport-in-hand, within hours of spotting a deal.
‘We Out Here’: Inside the New Black Travel Movement|Charlise Ferguson|January 4, 2015|DAILY BEAST
Earl Spencer adds, “Effectively, my great-grandfather sold his children to his father-in-law.”
The Real-Life ‘Downton’ Millionairesses Who Changed Britain|Tim Teeman|December 31, 2014|DAILY BEAST
The lack of a gun is not likely to be a major problem for close-in air-to-air dogfights against other jets.
New U.S. Stealth Jet Can’t Fire Its Gun Until 2019|Dave Majumdar|December 31, 2014|DAILY BEAST

But those weapons are of limited utility, especially during close-in fights.
New U.S. Stealth Jet Can’t Fire Its Gun Until 2019|Dave Majumdar|December 31, 2014|DAILY BEAST
Such throats are trying, are they not?In case one catches cold; Ah, yes!
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
The commander-in-chief still kept him attached to the headquarter staff, and constantly employed him on special service.
Napoleon's Marshals|R. P. Dunn-Pattison
So far Murat had always held subordinate commands; his great ambition was to become the commander-in-chief of an independent army.
Napoleon's Marshals|R. P. Dunn-Pattison
Their jurisdictions overlapped and the Gascon would play second fiddle to no one save to his great brother-in-law.
Napoleon's Marshals|R. P. Dunn-Pattison
But the novel disappeared under the clothes with amazing celerity as the voice of her sister-in-law demanded admission.
The Pit Town Coronet, Volume I (of 3)|Charles James Wills

British Dictionary definitions for in vivo

in vivo

/ (ɪn ˈviːvəʊ) /

adverb, adjective

(of biological processes or experiments) occurring or carried out in the living organism

Word Origin for in vivo

New Latin, literally: in a living (thing)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for in vivo

in vivo

[ vē′vō ]

adj.

Within a living organism.

Other words from in vivo

in vivo adv.

Scientific definitions for in vivo

in vivo

[ ĭn vē′vō ]

Inside a living organism. Compare in vitro.

Cultural definitions for in vivo

in vivo

[ (in vee-voh) ]

In nature; literally, “in life.” In vivo conditions are distinguished from those that might exist only in a laboratory. (Compare in vitro.)