D defs.my
Entry 1 sense Webster, 1913

Butane

/(bū"tān)/ · Bu·tane · IPA /ˈbjuːteɪn/
01 n. An inflammable gaseous saturated hydrocarbon, C4H10, of the marsh gas, or paraffin, series.
  1. 1.
    An inflammable gaseous saturated hydrocarbon, C4H10, of the marsh gas, or paraffin, series.(Chem.)