Skip to definition.
Get the FREE one-click dictionary software for Windows.


Noun: mifepristone
  1. 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
    - abortion pill, RU 486

Derived forms: mifepristones

Type of: aborticide, abortifacient, abortion-inducing drug

Encyclopedia: Mifepristone