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/ˈiːstrədʒən; ˈɛstrə-/
any of several steroid hormones, that are secreted chiefly by the ovaries and placenta, that induce oestrus, stimulate changes in the female reproductive organs during the oestrous cycle, and promote development of female secondary sexual characteristics
Derived Forms
oestrogenic (ˌiːstrəˈdʒɛnɪk; ˌɛstrə-), (US) estrogenic (ˌɛstrəˈdʒɛnɪk; ˌiːstrə-) adjective
oestrogenically, (US) estrogenically, adverb
Word Origin
C20: from oestrus + -gen
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for oestrogen

see estrogen.

Online Etymology Dictionary, © 2010 Douglas Harper
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oestrogen in Medicine

oestrogen oes·tro·gen (ěs'trə-jən)
Variant of estrogen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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