in vitro

in vitro

[in vee-troh]
noun
(of a biological process) made to occur in a laboratory vessel or other controlled experimental environment rather than within a living organism or natural setting.
Compare in vivo.


Origin:
1890–95; < Latin in vitrō literally, in glass

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World English Dictionary
in vitro (ɪn ˈviːtrəʊ)
 
adv, —adj
(of biological processes or reactions) made to occur outside the living organism in an artificial environment, such as a culture medium
 
[New Latin, literally: in glass]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

in vitro in vi·tro (ĭn vē'trō)
adj.
In an artificial environment outside a living organism.


in vi'tro 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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American Heritage
Science Dictionary
in vitro   (ĭn vē'trō)  Pronunciation Key 
In an artificial environment, such as a test tube. Compare in vivo.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
in vitro [(in vee-troh)]

In the laboratory; literally, “in glass” (laboratory experiments are often carried out in glass containers). In vitro conditions are distinguished from conditions that actually apply in nature. (Compare in vivo.)

Note: In vitro appears in the expression in vitro fertilization, a way of producing human embryos in a laboratory.
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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