Butane is a gas that is obtained from petroleum and is used as a fuel.
butane in British English
(ˈbjuːteɪn, bjuːˈteɪn)
noun
a colourless flammable gaseous alkane that exists in two isomeric forms, both of which occur in natural gas. The stable isomer, n-butane, is used mainly in the manufacture of rubber and fuels (such as Calor Gas). Formula: C4H10
Word origin
C19: from but(yl) + -ane
butane in American English
(ˈbjuˌteɪn; bjuˈteɪn)
noun
either of two alkanes (normal butane and isobutane) having the same formula, C4H10, but different structures and used esp. as a fuel