in vitro

https://doi.org/10.1351/goldbook.I03153
In glass, referring to a study in the laboratory usually involving isolated organ, tissue, cell, or biochemical systems.
See also:
in vivo
Source:
PAC, 1993, 65, 2003. (Glossary for chemists of terms used in toxicology (IUPAC Recommendations 1993)) on page 2061 [Terms] [Paper]