noun
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
• Syn: ↑mifepristone, ↑RU 486
• Hypernyms: ↑abortifacient, ↑aborticide, ↑abortion-inducing drug
Useful english dictionary. 2012.