Meanings
nounethinylestradiol (uncountable)
alternative ethynylestradiol · alternative ethinyl estradiol · alternative ethynyl estradiol · alternative UK ethinyloestradiol
- uncountablemedicineA derivative of 17β-estradiol, the major endogenous estrogen in humans, used in oral contraceptives.
Origin
Cite this entry
APA
ethinylestradiol. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ethinylestradiol
MLA
“ethinylestradiol.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ethinylestradiol. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “ethinylestradiol,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ethinylestradiol.
Source: ethinylestradiol on Wiktionary, CC BY-SA 4.0.