The Collaborative International Dictionary of English v.0.48:

Hydrocarbon \Hy`dro*car"bon\, n. [Hydro-, 2 + carbon.] (Chem.)
   A compound containing only hydrogen and carbon, as methane,
   benzene, etc.; also, by extension, any of their derivatives.
   [1913 Webster]

   Hydrocarbon burner, furnace, stove, a burner, furnace,
      or stove with which liquid fuel, as petroleum, is used.
      [1913 Webster]

WordNet (r) 3.0 (2006):

hydrocarbon
    n 1: an organic compound containing only carbon and hydrogen