estradiol

• oestradiol (UK)
• E2 (abbreviation)

From estra(triene) +‎ diol.

• (General American) IPA^(key): /ˌɛs.tɹəˈdaɪˌɔl/

• Audio (US):

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estradiol (countable and uncountable, plural estradiols)

1. (American spelling, biochemistry, pharmacology) A natural estrogenic hormone that is a phenolic alcohol estra-1,3,5-triene-3,17-diol (C₁₈H₂₄O₂) secreted chiefly by the ovaries of all vertebrates, that is a major and the most potent of the naturally occurring estrogens; the semisynthetic esterified compound is used medicinally to treat estrogen deficiency and breast cancer.
   • 2021, Jane Y. Xu, Michelle A. O’Connell, Lauren Notini, Ada S. Cheung, Sav Zwickl, Ken C. Pang, “Selective Estrogen Receptor Modulators: A Potential Option For Non-Binary Gender-Affirming Hormonal Care?”, in Front Endocrinol, →DOI:

     Gender-affirming hormone therapy may involve testosterone for trans people assigned female at birth (AFAB) and estradiol and anti-androgens for trans people AMAB.

• “oestradiol”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “estradiol”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• idolaster, idolastre, idolaters, steroidal

Borrowed from French oestradiol.

estradiol m (plural estradioli)

1. estradiol

• IPA^(key): /estɾaˈdjol/ [es.t̪ɾaˈð̞jol]
• Rhymes: -ol
• Syllabification: es‧tra‧diol

estradiol m (plural estradioles)

1. estradiol