Source : Webster's Revised Unabridged Dictionary (1913)

Silicofluoric \Sil`i*co*flu*or"ic\, a. (Chem.)
   Containing, or composed of, silicon and fluorine; especially,
   denoting the compounds called silicofluorides.

   {Silicofluoric acid} (Chem.), a compound of hydrofluoric acid
      and silicon fluoride, known only in watery solution. It is
      produced by the action of silicon fluoride on water, and
      is regarded as an acid, {H2SiF6}, and the type and origin
      of the silicofluorides.