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
The ruling also banned filling a prescription for mifepristone at a retail pharmacy.
—
Amy Hagstrom Miller, Washington Post, 9 June 2026
Pay no attention to the fact that it was proposed three weeks after the EPA came out hard against three-eyed fish, or that only three months ago, this same Legislature considered $100,000 court payouts to snitches willing to rat out mifepristone providers.
—Pat Beall, Sun Sentinel, 29 May 2026
When used without mifepristone, a higher dose of misoprostol must be used.
—Meghan Bartels, Scientific American, 27 May 2026
The American College of Obstetricians and Gynecologists recommends the same combination of mifepristone and misoprostol to treat a miscarriage.
—Dara Kass, The Conversation, 26 May 2026
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Amy Hagstrom Miller, Washington Post, 9 June 2026
Pay no attention to the fact that it was proposed three weeks after the EPA came out hard against three-eyed fish, or that only three months ago, this same Legislature considered $100,000 court payouts to snitches willing to rat out mifepristone providers.
—Pat Beall, Sun Sentinel, 29 May 2026
When used without mifepristone, a higher dose of misoprostol must be used.
—Meghan Bartels, Scientific American, 27 May 2026
The American College of Obstetricians and Gynecologists recommends the same combination of mifepristone and misoprostol to treat a miscarriage.
—Dara Kass, The Conversation, 26 May 2026
See All Example Sentences for mifepristone
Cite this Entry
“Mifepristone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mifepristone. Accessed 15 Jun. 2026.
Copy CitationMedical Definition
mifepristone
noun
mi·fep·ris·tone
ˌmi-fə-ˈpris-ˌtōn
mi-ˈfep-ri-ˌstōn
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
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