acetylene.
Any organic compound having one or more carbon–carbon triple bonds; an alkyne.
Meaning & usage
Any organic compound having one or more carbon–carbon triple bonds; an alkyne.
Ethyne; the simplest alkyne, a hydrocarbon of formula HC≡CH. It is a colourless, odourless, extremely flammable, explosive gas, formerly used as an illuminating gas, but now used in welding and metallurgy.
A lamp powered by acetylene, particularly a motor vehicle headlight.
Where this word comes from
Borrowed from French acétylène, coined by French chemist Marcellin Berthelot, from acetyl + -ene.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.