etynodiol

== English == === Alternative forms === ethynodiol, ethinodiol === Etymology === From ethyn(yl) +‎ -o- +‎ diol. === Pronunciation === (General American) IPA(key): /ˌɛt.ɪn.oʊˈdaɪˌɔl/ === Noun === etynodiol (uncountable) (organic chemistry, pharmacology) A synthetic progestogen C20H28O2 used especially in birth control pills usually in combination with an estrogen. ==== Derived terms ==== etynodiol diacetate === References === “ethynodiol diacetate”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.