ethinyl estradiol

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the radical HC≡C—, derived from acetylene.
ethinyl estradiol an estrogen derived from estradiol, used together with a progestational agent as a component of many oral contraceptives, in hormone replacement therapy, and as an antineoplastic in the treatment of advanced breast and prostate cancers; administered orally.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

e·thy·nyl es·tra·di·ol

a semisynthetic derivative of 17β-estradiol; active by mouth, with a long half-life, it is among the most potent of known estrogenic compounds; used in oral contraceptive preparations.
Synonym(s): ethinyl estradiol
Farlex Partner Medical Dictionary © Farlex 2012

ethinyl estradiol

A synthetic estrogen derivative, C20H24O2, used in oral and other contraceptive preparations and in hormone replacement therapy, usually in combination with a progestin.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Ethinyl estradiol

A semi-synthetic derivative of estradiol—an estrogen or female sex hormone—used in birth control pills and combined ECPs.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Phase III clinical trial with a new oral contraceptive containing 150 microgram desogestrel and 20 microgram ethinylestradiol. Acta Obstet Gynecol Scand.
(55.) Ling WY, Robichaud A, Zayid I, Wrixon W, and MacLeod SC (1979), "Mode of Action of DL-norgestrel and Ethinylestradiol Combination in Postcoital Contraception," Fertil Steril.
(2004) reported gonadal sex reversal in a species of wild fish Gasterosteus aculeatus following treatment with 17a ethinylestradiol (estrogen).
Superior cycle control with a contraceptive vaginal ring compared with an oral contraceptive containing 30 microg ethinylestradiol and 150 microg levonorgestrel: a randomized trial.
Comparison of ethinylestradiol and nonylphenol effects on reproduction of Chinese rare minnows (Gobiocypris rarus).
Muscat: The Ministry of Health has banned the import, distribution and sale of an acne drug called Diane 35 (cyproterone acetate, 2 micrograms; ethinylestradiol, 35 micrograms), a statement from the Ministry of Health said.
Mulders, "Cycle control, quality of life and acne with two low-dose oral contraceptives containing 20 [micro]g ethinylestradiol," Contraception, vol.
Several animal models of intrahepatic cholestasis which simulate human cholestatic diseases are adopted such as oral contraceptive-induced cholestasis using ethinylestradiol [5].
Assessment of quantitative dual-parameter flow cytometric analysis for the evaluation of testicular toxicity using cyclophosphamide and ethinylestradiol treated rats.
When researchers added low concentrations of ethinylestradiol to a Northern Ontario lake, for instance, male fathead minnows were feminized and egg formation in females was altered, leading to near-extinction of the species in that lake.