Mifepristone

1 definition found

From WordNet (r) 2.0 [wn]:

  Mifepristone
       n : an abortion-inducing drug (trade name Mifepristone)
           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 [syn: {abortion
           pill}, {RU 486}]