Meaning of ethynyl in English:

ethynyl

(also ethinyl)

Pronunciation /ɪˈθʌɪnɪl/ /ɪˈθʌɪnʌɪl/ /ˈɛθɪnɪl/

noun

Chemistry
  • The unsaturated hydrocarbon radical —C≡CH, derived from ethyne (acetylene). Usually attributive.

Origin

Mid 19th century. From ethyne + -yl, after French éthinyle or its etymon German Aethinyl.