Definitions

in vitro

[in vee-troh] / ɪn ˈvi troʊ /

ADJECTIVE

artificial

Synonyms

WEAK

artificial insemination outside the womb test-tube

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Couples who plan to undergo in vitro fertilization are increasingly addressing custody of frozen embryos in prenups.

From The Wall Street Journal • Apr. 23, 2026

Last March, at a Women’s History Month event, President Donald Trump highlighted his record on women’s health, including support for in vitro fertilization, saying he’ll one day be known as the “fertilization president.”

From Salon • Apr. 18, 2026

Fertility treatments: Large employer health plans will be required to cover infertility treatments, including in vitro fertilization, for everyone, regardless of marital status, gender identity or sexual orientation.

From Los Angeles Times • Jan. 1, 2026

Nelson was still married in 2020 when the fertility clinic called her at work with devastating news: Her husband had just requested the destruction of the embryos they created through in vitro fertilization, or IVF.

From The Wall Street Journal • Nov. 23, 2025

When that didn’t work, he recommended we move to in vitro fertilization.

From "Becoming" by Michelle Obama