norethisterone

N1O1R1E1T1H4I1S1T1E1R1O1N1E1
UK/nɔː.ɹɛˈθɪ.stə.ɹəʊn/US/ˌnɔɹ.əˈθɪ.stəˌɹoʊn/

noun

A synthetic steroid hormone, 19-nor-17α-ethynyltestosterone (C₂₀H₂₆O₂), which has actions similar to those of progesterone and is used chiefly for contraception.

Scrabble 17
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Meanings

nounnorethisterone (uncountable)

alternative US norethindrone

  1. uncountablemedicineA synthetic steroid hormone, 19-nor-17α-ethynyltestosterone (C₂₀H₂₆O₂), which has actions similar to those of progesterone and is used chiefly for contraception.

Origin

From nor- + ethisterone.

Full word history & related roots →
Cite this entry
APA

norethisterone. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/norethisterone

MLA

“norethisterone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/norethisterone. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “norethisterone,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/norethisterone.

Source: norethisterone on Wiktionary, CC BY-SA 4.0.