The Collaborative International Dictionary of English v.0.48:

Siliciureted \Si*lic"i*u*ret`ed\, a. [Written also
   siliciuretted.] (Old. Chem.)
   Combined or impregnated with silicon. [Obsoles.]
   [1913 Webster]

   Siliciureted hydrogen. (Chem.) Hydrogen silicide. [Obs.]
      [1913 Webster]