in vitro

adverb or adjective

in vi·​tro in-ˈvē-(ˌ)trō  -ˈvi- 

-ˈwē-

: outside the living body and in an artificial environment

Examples of in vitro in a Sentence

Recent Examples on the Web

The law also protects those who are trying to get pregnant through in vitro fertilization and pregnant workers with medical conditions such as severe nausea and vomiting, A Better Balance President Inimai Chettiar said. — ABC News, 17 Sep. 2026

Rapti-Tzelepi was running up against the Greek government’s 54-year age limit for women to complete in vitro fertilization procedures and secure approval from a national authority. — CNN Money, 14 Sep. 2026

The pair had previously been pursuing in vitro fertilization. — Anthony Robledo, USA Today, 5 Sep. 2026

More women are having twins and triplets more often because of in vitro fertilization. — Megha Satyanarayana, Scientific American, 2 Sep. 2026

Word History

Etymology

New Latin, literally, in glass

First Known Use

circa 1894, in the meaning defined above

Rhymes for in vitro

• nitro

Kids Definition

in vitro

adverb or adjective

in vi·​tro in-ˈvē-(ˌ)trō 

: outside the living body and in an artificial environment

an egg fertilized in vitro

Etymology

Latin, literally, "in glass"

Medical Definition

in vitro

adverb or adjective

in vi·​tro in-ˈvē-(ˌ)trō  -ˈvi- 

: outside the living body and in an artificial environment

growth of cells in vitro

in vitro studies