Definition of propane in US English:



  • A flammable hydrocarbon gas of the alkane series, present in natural gas and used as bottled fuel.

    Chemical formula: C₃H₈

    • ‘From natural gas and propane to heating oil and gasoline, prices are on the rise.’
    • ‘There is no water, no electricity, no kerosene, no propane, no benzine, no security.’
    • ‘The gas component may be ethane, propane, butane, carbon dioxide, or hydrogen sulphide, but is most commonly methane.’
    • ‘One way to do just this would be to detect the on-going production of hydrocarbons such as propane which cannot be produced by volcanic activity.’
    • ‘The towers and tanks belonged to a plant for converting liquefied petroleum gas into propane and other products.’


Mid 19th century: from propionic acid + -ane.