a colorless, poisonous, highly flammable gaseous hydrocarbon, HC?CH, produced by the reaction of water and calcium carbide: used in organic compound synthesis, for lighting, and with oxygen in welding: the simplest alkyne
Origin of acetyleneacetyl + -ene
A colorless, highly flammable or explosive gas, C2H2, used for metal welding and cutting and as an illuminant. Also called ethyne .
(countable and uncountable, plural acetylenes)
- (organic chemistry, countable) Any organic compound having one or more carbon–carbon triple bonds; an alkyne.
- (organic chemistry, uncountable) Ethyne; the simplest alkyne, a hydrocarbon of formula HC≡CH. It is a colourless gas, with a peculiar, unpleasant odour, formerly used as an illuminating gas, but now used in welding or metallurgy.