in vitro

in an artificial environment (i.e. test tube)

In vitro (Latin: (with) in the glass) refers to the technique of performing a given experiment in a test tube, or, generally, in a controlled environment outside a living organism. In vitro fertilization is a well-known example of this. Many experiments in cellular biology are conducted outside of organisms or cells; because the test conditions may not correspond to the conditions inside of the organism, this may result in inaccurate results. Consequently, such experimental results are often annotated with in vitro, in contradistinction with in vivo.
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Adjective
1. in an artificial environment outside the living organism; "in vitro fertilization"
(synonym) ex vivo
(antonym) in vivo
Adverb
1. in an artificial environment outside the living organism; "an egg fertilized in vitro"
(synonym) ex vivo
(pertainym) ex vivo

in vitro, in an artificial environment

adv. in vitro