from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An estrogenic hormone, C18H22O2, used primarily in the treatment of estrogen deficiency. Also called theelin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An estrogenic hormone excreted by the ovaries; sometimes manufactured synthetically for use in cases of estrogen deficiency.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a naturally occurring weak estrogenic hormone secreted by the mammalian ovary; synthesized (trade name Estronol) and used to treat estrogen deficiency


estr(us) + -one.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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