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estrogen

[es-truh-juh n] /ˈɛs trə dʒən/
noun, Biochemistry
1.
any of several major female sex hormones produced primarily by the ovarian follicles of female mammals, capable of inducing estrus, developing and maintaining secondary female sex characteristics, and preparing the uterus for the reception of a fertilized egg: used, especially in synthetic form, as a component of oral contraceptives, in certain cancer treatments, and in other therapies.
Origin
1925-1930
1925-30; estr(us) + -o- + -gen
Related forms
antiestrogen, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for antiestrogen

estrogen

/ˈɛstrədʒən; ˈiːstrə-/
noun
1.
the usual US spelling of oestrogen
Derived Forms
estrogenic (ˌɛstrəˈdʒɛnɪk; ˌiːstrə-) adjective
estrogenically, adverb
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 antiestrogen
estrogen
coined 1927 from estrus + -gen "producing."
Online Etymology Dictionary, © 2010 Douglas Harper
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antiestrogen in Medicine

antiestrogen an·ti·es·tro·gen (ān'tē-ěs'trə-jən, ān'tī-)
n.
A substance capable of preventing full expression of the biological effects of an estrogen.

estrogen es·tro·gen or oes·tro·gen (ěs'trə-jən)
n.
Any of several natural or synthetic substances formed by the ovary, placenta, testis, and certain plants, that stimulate the female secondary sex characteristics, exert systemic effects such as the growth and maturation of long bones, and are used to treat disorders due to estrogen deficiency and to ameliorate cancers of the breast and prostate. Also called estrin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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antiestrogen in Science
estrogen
  (ěs'trə-jən)   
Any of a group of steroid hormones that primarily regulate the growth, development, and function of the female reproductive system. The main sources of estrogen in the body are the ovaries and the placenta. Estrogen-like compounds are also formed by certain plants.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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antiestrogen in Culture
estrogen [(es-truh-juhn)]

A group of hormones, secreted mainly by the ovaries, that influence the female reproductive system in many ways, notably in preparing the body for ovulation and in the development of female secondary sex characteristics.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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