Carburetted

from 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

from The Collaborative International Dictionary of English v.0.48

Carburet \Car"bu*ret\, v. t. [imp. & p. p. {Carbureted} or
   {Carburetted} (?); p. pr. & vb. n. {Carbureting} or
   {Carburetting}.]
   To combine or to impregnate with carbon, as by passing
   through or over a liquid hydrocarbon; to carbonize or
   carburize.
   [1913 Webster]

         By carbureting the gas you may use poorer coal.
                                                  --Knight.
   [1913 Webster]