Standard Lemma guide

ethinylestradiol

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • General-American: /ɪˌθaɪ.nl̩ˌɛ.stɹəˈdaɪˌɔl/
  • General-American: /ˌɛθ.ɪ.nɪlˌɛ.stɹəˈdaɪˌɔl/

1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From ethinyl + estradiol.