Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biochemistry The steroid hormone estrone.

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

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

Etymologies

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

[Greek thēlus, female; see dhē(i)- in Indo-European roots + –in.]

Examples

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