ru 486

Noun ru 486 has 1 sense

• ru 486(n = noun.artifact) abortion pill, mifepristone - 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;
is a kind of aborticide, abortifacient, abortion-inducing drug