Source : Webster's Revised Unabridged Dictionary (1913)

Silicic \Si*lic"ic\, a. [L. silex, silicis, a flint: cf. F.
   silicique.] (Chem.)
   Pertaining to, derived from, or resembling, silica;
   specifically, designating compounds of silicon; as, silicic
   acid.

   {Silicic acid} (Chem.), an amorphous gelatinous substance,
      {Si(HO)4}, very unstable and easily dried to silica, but
      forming many stable salts; -- called also {orthosilicic,
      or normal silicic, acid}.

Source : WordNet®

silicic acid
     n : a jelly-like substance (hydrated silica)