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Definition of Ethynyl
1. Noun. (organic chemistry) The univalent radical HC?C- derived from acetylene ¹
¹ Source: wiktionary.com
Definition of Ethynyl
1. a univalent chemical radical [n -S]
Medical Definition of Ethynyl
1. The monovalent radical HC≡C-. Synonym: acetenyl, ethinyl. (05 Mar 2000)