Definition of acetylene in English:

acetylene

noun

Chemistry
  • A colourless pungent-smelling hydrocarbon gas, which burns with a bright flame, used in welding and formerly in lighting.

    Alternative name: ethyne; chemical formula: C₂H₂

    • ‘To transport gaseous substances such as propane or acetylene economically, they must be compressed greatly to fit into containers of a reasonable size.’
    • ‘We use the heat produced by the burning of acetylene in the flame of the oxyacetylene torch to make welds.’
    • ‘Observers have long known that Titan's atmosphere contains methane, ethane, acetylene and many other hydrocarbon compounds.’
    • ‘Acrylonitrile is another product of acetylene, formed in a reaction with hydrogen cyanide.’
    • ‘A delicate 24-hour cooling operation saw roads and houses cordoned off as the emergency services tried to prevent the acetylene, propane and oxygen cylinders from exploding in Thornton Heath.’

Origin

Mid 19th century: from acetic acid + -yl + -ene.

Pronunciation

acetylene

/əˈsɛtɪliːn/