Outside the living organism or natural system. Usually refers to artificial experimental systems such as cultures or cell‐free extracts.
In the laboratory (outside the body). The opposite of in vivo (in the body).
Literally ‘in glass’; used to indicate an observation made experimentally in the test-tube, as distinct from the natural living conditions, in vivo.
In an unnatural position (e.g., outside the body, in the test tube), “In an vitro” is Latin for “in glass.” For example, the testing of a substance, or the experimentation in (using) a “dead” cell-free system.
A Latin phrase meaning ‘in a glass’, i.e. in a test tube or similar container used in a laboratory.
Refers to a laboratory test or other procedure conducted in a test tube or other laboratory dish.
A term commonly used in medical research and experimental biology. Literally ‘in a glass’, it refers to observations made outside the body: for example, on the action of drugs on bacteria. The opposite term is in vivo, which refers to observations of processes in the body.
In glass, as in a test tube. An in vitro test is one done in the laboratory, usually involving isolated tissue, organ, or cell preparations.
An experiment that is conducted in an artificial environment, such as a test tube or petri dish.
Literally ‘in glass’; frequently in the sense ‘not under natural conditions ’, e.g. in the laboratory; in experimental culture; (of chemical reactions), not in living cells.
A biochemical response taking place within a laboratory apparatus.
Biological processes carried out within a laboratory setting, as opposed to within a living organism’s body, are termed “in vitro.” This term directly translates to “in glass.”
Refers to processes occurring in test tubes rather than inside the body (in vivo). Often, results achieved in vitro may not replicate when applied to the body.