Medical Dictionary
Main Entry:
ethinyl estradiol Variants:
or ethy·nyl·es·tra·di·ol /"eth-&-nil-"es-tr&-'dI-"ol, -"Ol/ or chieflyBritish ethi·nyl·oes·tra·di·ol or ethy·nyl·oes·tra·di·ol /"eth-&-nil-"E-str&-'dI-"ol,-E-'strad-E-"ol, -"Ol/ Function:
noun : a white crystalline very potent synthetic estrogen C
20H
24O
2 prepared from estrone and used incombination (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 breastcancer —see
ORTHO-NOVUM