mifepristone

noun

mi·​fep·​ris·​tone ˌmi-fə-ˈpri-ˌstōn How to pronounce mifepristone (audio)
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Biden Administration helped facilitate access to mifepristone by allowing it to be prescribed via telehealth and received by mail. Nik Popli, TIME, 29 Jan. 2025 For my entire 20+ year career as a practicing OBGYN, mifepristone has been used as a safe and effective medication. Thomas G. Moukawsher, Newsweek, 29 Jan. 2025 All but four of the women completed the termination of their pregnancies without further intervention, a 97 percent completion rate that is similar to the regimen using mifepristone. Pam Belluck, New York Times, 23 Jan. 2025 The plan makes calls to invoke the 150-year-old federal Comstock Act in order to prosecute providers who send mifepristone by mail. Katy Golvala, Hartford Courant, 19 Jan. 2025 See all Example Sentences for mifepristone 

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

Time Traveler
The first known use of mifepristone was in 1985

Dictionary Entries Near mifepristone

Cite this Entry

“Mifepristone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mifepristone. Accessed 2 Feb. 2025.

Medical Definition

mifepristone

noun
mi·​fep·​ris·​tone ˌmi-fə-ˈpris-ˌtōn How to pronounce mifepristone (audio) mi-ˈfep-ri-ˌstōn How to pronounce mifepristone (audio)
: a drug C29H35NO2 taken orally to induce abortion especially early in pregnancy by blocking the body's use of progesterone

called also RU-486

More from Merriam-Webster on mifepristone

Last Updated: - Updated example sentences
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