The Collaborative International Dictionary of English v.0.48:

Carbureted \Car"bu*ret`ed\, a.
   1. (Chem.) Combined with carbon in the manner of a carburet
      or carbide.
      [1913 Webster]

   2. Saturated or impregnated with some volatile carbon
      compound; as, water gas is carbureted to increase its
      illuminating power. [Written also carburetted.]
      [1913 Webster]

   Carbureted hydrogen gas, any one of several gaseous
      compounds of carbon and hydrogen, some of with make up
      illuminating gas.

   Light carbureted hydrogen, methane (CH4), also called
      marsh gas, and fire damp.
      [1913 Webster +PJC] Carburetor