Added 10 October 2026 acetylide noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about acetylide at Wordnik → Where our words come from → Any organic compound derived from acetylene or a terminal acetylene by replacing a hydrogen atom with a metal. Related Words: arylacetyleneacetylenylacetylenationdiarylacetylenearyldiacetyleneacetyleneacetoxyacetylacetylantacetoxyalkeneacetyloniumdialkylacetylene Back to today's word