Dictionary

ethinyl estradiol

noun

Definition of ETHINYL ESTRADIOL

:  a very potent synthetic estrogen C20H24O2 used especially as an oral contraceptive

First Known Use of ETHINYL ESTRADIOL

1939
Medical Dictionary

ethinyl estradiol

noun

Medical Definition of ETHINYL ESTRADIOL

:  a white crystalline very potent synthetic estrogen C20H24O2 prepared from estrone and used in combination (as with norgestrel or norethindrone) as a birth control pill or alone in the treatment of menopausal symptoms or female hypogonadism or in the palliative treatment of prostate or breast cancer—see ortho evra, ortho-novum, ortho tri-cyclen

Variants of ETHINYL ESTRADIOL

ethinyl estradiol or ethy·nyl·es·tra·di·ol \ˌeth-ə-nil-ˌes-trə-ˈdī-ˌl, -ˌōl\ or chiefly British ethi·nyl·oes·tra·di·ol or ethy·nyl·oes·tra·di·ol \ˌeth-ə-nil-ˌē-strə-ˈdī-ˌl, -ē-ˈstrad-ē-ˌl, -ˌōl\

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July 04, 2015
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