\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}.