mifepristone

[ mif-uh-pris-tohn ]
/ ˌmɪf əˈprɪs toʊn /

noun

an antigestational drug, C29H35NO2, that prevents a fertilized egg from attaching to the uterine wall by blocking the action of progesterone.

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Origin of mifepristone

1985–90; probably alteration of (a)mi(no)phe(nol) + pr(opyl) + est(radiol) + -one
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for mifepristone

mifepristone
/ (mɪˈfɛprɪˌstəʊn) /

noun

an antiprogestogenic steroid, used in the medical termination of pregnancy. Formula: C 29 H 35 NO 2

Word Origin for mifepristone

C20: from a mi no phe nol + pr opyne + oest radiol + -one
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for mifepristone

mifepristone
[ mĭ-fĕprĭ-stōn ]

n.

RU 486
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.