ethinylestradiol

English

Chemical structure of ethinylestradiol

Alternative forms

ethynylestradiol, ethinyl estradiol, ethynyl estradiol
ethinyloestradiol (UK)

Etymology

From ethinyl +‎ estradiol.

Pronunciation

(General American) IPA^(key): /ɪˌθaɪ.nl̩ˌɛ.stɹəˈdaɪˌɔl/, /ˌɛθ.ɪ.nɪlˌɛ.stɹəˈdaɪˌɔl/

Noun

ethinylestradiol (uncountable)

(pharmacology) A derivative of 17β-estradiol, the major endogenous estrogen in humans, used in oral contraceptives.

References

“ethinyl estradiol”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

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