Term: ethinylestradiol
IPA: ɪˌθaɪ.nl̩ˌɛ.stɹəˈdaɪˌɔl

==English==
[[File:Ethinylestradiol.svg|thumb|Chemical structure of '''ethinylestradiol''']]
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===Alternative forms===
* {{alter|en|ethynylestradiol|ethinyl estradiol|ethynyl estradiol}}
* {{alter|en|ethinyloestradiol||UK}}

===Etymology===
From {{compound|en|ethinyl|estradiol}}.

===Pronunciation===
* {{IPA|en|/ɪˌθaɪ.nl̩ˌɛ.stɹəˈdaɪˌɔl/|/ˌɛθ.ɪ.nɪlˌɛ.stɹəˈdaɪˌɔl/|a=GA}}

===Noun===
{{en-noun|-}}

# {{lb|en|pharmaceutical drug}} A [[derivative]] of 17β-[[estradiol]], the major [[endogenous]]