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gas - definition and synonyms


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noun gas pronunciation in British English /ɡæs/
Word Forms
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  1. 1
    [countable/uncountable] science a substance such as air that is neither a solid nor a liquid
    regulations to cut the emissions of gases such as carbon dioxide
    They detected high levels of radon gas in the building.
    Synonyms and related words
    1. a.
      [uncountable] a gas burned as fuel, for example to heat your house or cook food
      a gas cooker/heater/boiler
      She couldn’t pay her gas bill.
      Can you smell gas?
      gas mark 3/4 etc (=a measurement of the temperature of an oven): Heat the oven to gas mark 6.
    2. b.
      [uncountable] a gas used for harming or killing people, or for affecting their behaviour
      Police used gas to disperse the crowd.
      A nerve gas attack left hundreds injured.
      Synonyms and related words
    3. d.
      [uncountable] mainly American wind produced inside your body by your stomach
  2. 2
    [uncountable] American petrol
    get gas: We need to get some gas before we leave town.




a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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