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90s Slang You Should Know

in vitro

[in vee-troh] /ɪn ˈvi troʊ/
adverb, adjective
1.
(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 of in vitro
1890-1895
First recorded in 1890-95, in vitro is from the Latin word in vitrō literally, in glass

in vitro fertilization

noun
1.
a specialized technique by which an ovum, especially a human one, is fertilized by sperm outside the body, with the resulting embryo later implanted in the uterus for gestation.
Origin
First recorded in 1970-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for in vitro

in vitro

/ɪn ˈviːtrəʊ/
adverb, adjective
1.
(of biological processes or reactions) made to occur outside the living organism in an artificial environment, such as a culture medium
Word Origin
New Latin, literally: in glass

in vitro fertilization

noun
1.
a technique enabling some women who are unable to conceive to bear children. Egg cells removed from a woman's ovary are fertilized by sperm in vitro; some of the resulting fertilized egg cells are incubated until the blastocyst stage, which are then implanted into her uterus IVF
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 vitro

Latin; "in a test tube, culture dish, etc.;" literally "in glass" (see vitreous).

Online Etymology Dictionary, © 2010 Douglas Harper
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in vitro in Medicine

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


in vi'tro adv.

in vitro fertilization n.
Fertilization of an egg outside the body of a female by the addition of sperm, as a means of producing a zygote.

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 vitro in Science
in vitro
  (ĭn vē'trō)   
In an artificial environment, such as a test tube. Compare in vivo.
in vitro fertilization  
Fertilization of an egg outside the body of a female by the addition of sperm, as a means of producing a zygote.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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in vitro in Culture
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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