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Related to The Abortion Pill RU-486: Mifepristone


A synthetic steroid, C29H35NO2, that blocks the action of progesterone and is used in combination with misoprostol to induce abortion in early pregnancy. Also called RU 486.

[(a)mi(no) + alteration of phe(nyl) + pr(opyl) + alteration of est(radiol) + -one.]


(Pharmacology) an antiprogestogenic steroid, used in the medical termination of pregnancy. Formula: C29H35NO2
[C20: from aminophenol + propyne + oestradiol + -one]


(ˌmɪf əˈprɪs toʊn)
an antigestational drug that prevents a fertilized egg from attaching to the uterine wall by blocking the action of progesterone.
[1985–90; probably alter. of (a)mi(no)phe(nol) + pr(opyl) + est(radiol) + -one]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mifepristone - an abortion-inducing drug (trade name RU_486) developed in Francemifepristone - an abortion-inducing drug (trade name RU_486) developed in France; when taken during the first five weeks of pregnancy it blocks the action of progesterone so that the uterus sloughs off the embryo
aborticide, abortifacient, abortion-inducing drug - a drug (or other chemical agent) that causes abortion


n mifepristona
References in periodicals archive ?
The precise drugs involved are not specified in the CDC report; other sources indicate most involve the abortion pill RU-486 and prostaglandin misoprostol, though use of misoprostol alone is increasing.
But because Planned Parenthood offers the abortion pill RU-486 and the Catholic Church opposes abortion, Archbishop John Vlazny told Catholic Community Services that it must sever its ties to United Way if it wished to continue as a Catholic agency.
And Jane Henney, who ran the agency when the abortion pill RU-486 pill was approved, is among those reportedly being considered for FDA chief under President-elect Barack Obama.