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mifepristone

[mif-uh-pris-tohn]
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noun
  1. an antigestational drug, C29H35NO2, that prevents a fertilized egg from attaching to the uterine wall by blocking the action of progesterone.

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. 2018
British Dictionary definitions for mifepristone

mifepristone

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

Word Origin

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

mifepristone in Medicine

mifepristone

(mĭ-fĕprĭ-stōn)
n.
  1. RU 486