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in vivo

[in vee-voh] /ɪn ˈvi voʊ/
adverb, adjective
(of a biological process) occurring or made to occur within a living organism or natural setting.
Compare in vitro.
Origin of in vivo
1900-05; < Latin in vīvō in (something) alive Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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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
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
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Word Origin and History for in-vivo

in vivo

Latin; "within a living organism" (see viva).

Online Etymology Dictionary, © 2010 Douglas Harper
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in-vivo in Medicine

in vivo in vi·vo (vē'vō)
Within a living organism.

in vivo adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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in-vivo in Science
in vivo
  (ĭn vē'vō)   
Inside a living organism. Compare in vitro.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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in-vivo in Culture
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.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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