in vi·tro
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Audio Help [in vee-troh] Pronunciation Key –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. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
in vitro
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| in vi·tro
Audio Help (ĭn vē'trō) Pronunciation Key
adv. & adj. In an artificial environment outside the living organism: an egg fertilized in vitro; in vitro fertilization. [New Latin in vitrō : Latin in, in + Latin vitrō, ablative of vitrum, glass.] |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
| in vitro | |
adjective | |
| 1. | in an artificial environment outside the living organism; "in vitro fertilization" [ant: in vivo] |
adverb | |
| 1. | in an artificial environment outside the living organism; "an egg fertilized in vitro" |
| WordNet® 3.0, © 2006 by Princeton University. |
| in vitro
Audio Help (ĭn vē'trō) Pronunciation Key
In an artificial environment, such as a test tube. Compare in vivo. |
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
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.
[Chapter:] Life Sciences
| 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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