ethinyloestradiol
/ˌɛθɪnɪlˌiːstrəˈdʌɪɒl/ /ˌɛθɪnɪlˌɛstrəˈdʌɪɒl/(also ethinylestradiol, ethynylestradiol, ethynyloestradiol) Pharmacology
noun
A synthetic oestrogen used in oral contraceptives.
- Chemical name: 17-ethynylestradiol; C20H24O2..
Origin
1930s; earliest use found in The British Medical Journal. From ethinyl, variant of ethynyl + oestradiol, after German Aethinyl-oestradiol.
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