- (organic chemistry) Any organic compound having one or more carbon-carbon triple bond; an alkyne.
- (organic compound) ethyne, Ethyne; the simplest alkyne, a hydrocarbon of formula HCâ‰¡CH. It is a colourless gas, with a peculiar, unpleasant odour, formerly used as an illuminating gas, but now used in welding or metallurgy.
Etymology: From (term, acetyl) + (term, -ene).
- Dutch: acetyleen
- French: acétylène
- German: Acetylen
- Italian: acetilene
- Spanish: acetileno
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