WordReference Random House Unabridged Dictionary of American English © 2026
ethy′nyl group′, [Chem.]
  1. Chemistrythe univalent group HC=C-, derived from acetylene. Also called ethy′nyl rad′ical. 

'ethynyl group' also found in these entries (note: many are not synonyms or translations):
ethynyl - ethynylation

Forum discussions with the word(s) "ethynyl group" in the title:


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