estrogen

noun
es·​tro·​gen | \ ˈe-strə-jən How to pronounce estrogen (audio) \

Definition of estrogen

: any of various natural steroids (such as estradiol) that are formed from androgen precursors, that are secreted chiefly by the ovaries, placenta, adipose tissue, and testes, and that stimulate the development of female secondary sex characteristics and promote the growth and maintenance of the female reproductive system also : any of various synthetic or semisynthetic steroids (such as ethinyl estradiol) that mimic the physiological effect of natural estrogens

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Examples of estrogen in a Sentence

Recent Examples on the Web

Now that her estrogen is waning, her skin is coarser and her features more severe. Jennifer Szalai, New York Times, "In ‘Flash Count Diary,’ Darcey Steinke Documents the Enigma, the Rage and the Power of Menopause," 26 June 2019 But manufacturers cut estrogen and progestin doses to reduce risks. Robert D. Mcfadden, BostonGlobe.com, "George Rosenkranz, a developer of the birth control pill, dies at 102," 26 June 2019 All of the women were given standard hormonal therapy -- an aromatase inhibitor or tamoxifen -- plus a medication that shuts down the ovaries' production of estrogen. Amy Norton, CBS News, "Newer drug extends lives of young breast cancer patients, study finds," 3 June 2019 These hormones are influenced by fluctuating estrogen levels (helping to explain the cravings often experienced during pregnancy or premenstrual syndrome), as well as sleep deprivation and stress. Molly Kimball, nola.com, "Ever feel addicted to food? You’re not alone: Best of Molly Kimball," 25 June 2019 All participants were given standard hormone therapy (an aromatase inhibitor or tamoxifen) as well as a medication that shuts down the ovaries' production of estrogen. Samantha Lauriello, Health.com, "A New Breast Cancer Treatment Can Extend the Lives of Younger Patients, Study Finds," 4 June 2019 In the laboratory, certain pollutants like synthetic estrogens and herbicides have been shown to induce genetically male frogs to develop outwardly as females. Douglas Main, National Geographic, "Healthy frogs can mysteriously reverse their sex," 21 Mar. 2019 How do testosterone or estrogen or other anabolic steroids solve this problem? Umair Irfan, Vox, "Olympic swimmer Ryan Lochte broke doping rules. It happens far more than you think.," 24 July 2018 However, estrogen-containing birth control methods aren't recommended for everyone, including people who smoke and are over 35, people with a history of blood clots, and people who've had breast cancer. Korin Miller, SELF, "A Birth Control Ring You Can Use for a Whole Year Is Now FDA-Approved," 14 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'estrogen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of estrogen

1927, in the meaning defined above

History and Etymology for estrogen

New Latin estrus + International Scientific Vocabulary -o- + -gen

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Statistics for estrogen

Last Updated

22 Jul 2019

Look-up Popularity

Time Traveler for estrogen

The first known use of estrogen was in 1927

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More Definitions for estrogen

estrogen

noun

English Language Learners Definition of estrogen

medical : a substance (called a hormone) that occurs naturally in women

estrogen

noun
es·​tro·​gen | \ ˈes-trə-jən How to pronounce estrogen (audio) \
variants: or chiefly British oestrogen \ ˈē-​strə-​jən How to pronounce oestrogen (audio) \

Medical Definition of estrogen

: any of various natural steroids (as estradiol) that are formed from androgen precursors, that are secreted chiefly by the ovaries, placenta, adipose tissue, and testes, and that stimulate the development of female secondary sex characteristics and promote the growth and maintenance of the female reproductive system also : any of various synthetic or semisynthetic steroids (as ethinyl estradiol) that mimic the physiological effect of natural estrogens

Other Words from estrogen

estrogen-like or estrogenlike \ -​ˌlīk How to pronounce estrogenlike (audio) \ adjective
an estrogen-like compound estrogen-like effects

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More from Merriam-Webster on estrogen

Spanish Central: Translation of estrogen

Nglish: Translation of estrogen for Spanish Speakers

Britannica English: Translation of estrogen for Arabic Speakers

Britannica.com: Encyclopedia article about estrogen

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