mifepristone

noun

mi·​fep·​ris·​tone ˌmi-fə-ˈpri-ˌstōn 

mi-ˈfe-pri-ˌstōn

: a drug C₂₉H₃₅NO₂ taken orally to induce abortion especially early in pregnancy by blocking the body's use of progesterone

called also RU-486

Examples of mifepristone in a Sentence

Recent Examples on the Web

Both Makary and Health and Human Services Secretary Robert F. Kennedy Jr. shared plans to have the FDA review mifepristone data after usage spiked following the overturning of Roe v. Wade. —Ashleigh Fields, The Hill, 13 Mar. 2025

Like other drugs, the FDA continues to collect reports of side effects and complications with mifepristone. —arkansasonline.com, 7 Mar. 2025

The only other mifepristone manufacturer in the country, Danco Laboratories, is already named as a defendant in the suit. —Lisa Lerer, New York Times, 25 Feb. 2025

Myth #1: The FDA rushed the decision to make mifepristone more accessible. —Korin Miller, SELF, 29 Jan. 2025

Word History

Etymology

perhaps from amino + fe- (alteration of phen-) + pri- (alteration of prop-) + estradiol + -one

First Known Use

1985, in the meaning defined above

Rhymes for mifepristone

• aldosterone
• anticyclone
• progesterone
• testosterone
• acetone
• anglophone
• baritone
• bourguignon
• buspirone
• chaperon
• chaperone
• cobblestone

Medical Definition

mifepristone

noun

mi·​fep·​ris·​tone ˌmi-fə-ˈpris-ˌtōn  mi-ˈfep-ri-ˌstōn 

: a drug C₂₉H₃₅NO₂ taken orally to induce abortion especially early in pregnancy by blocking the body's use of progesterone

called also RU-486