norgestrel

== English == === Etymology === From nor- +‎ -gestr- (“estrogen”) +‎ e(thy)l. === Pronunciation === (Received Pronunciation) IPA(key): /nɔːˈd͡ʒɛ.stɹl̩/ (General American) IPA(key): /nɔɹˈd͡ʒɛ.stɹəl/ === Noun === norgestrel (uncountable) (pharmacology) A synthetic progestogen C21H28O2 having two optically active forms of which the biologically active levorotatory form is used in birth control pills. ==== Derived terms ==== levonorgestrel dexnorgestrel === References === “norgestrel”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022. “norgestrel”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.