from The American Heritage® Dictionary of the English Language, 4th Edition
- n. RU 486.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A steroid pharmaceutical used to induce abortion, or as an emergency contraceptive.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. 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
(a)mi(no) + alteration of phe(nyl) + pr(opyl) + alteration of est(radiol) + -one.(American Heritage® Dictionary of the English Language, Fourth Edition)