\Stan"nic\, a. [L. stannum tin: cf. F. stannique.]
(Chem.)
Of or pertaining to tin; derived from or containing tin;
specifically, designating those compounds in which the
element has a higher valence as contrasted with {stannous}
compounds.
{Stannic acid}.
(a) A hypothetical substance, {Sn(OH)4}, analogous to silic
    acid, and called also {normal stannic acid}.
(b) Metastannic acid.
{Stannic chloride}, a thin, colorless, fuming liquid,
   {SnCl4}, used as a mordant in calico printing and dyeing;
   -- formerly called {spirit of tin}, or {fuming liquor of
   Libavius}.
{Stannic oxide}, tin oxide, {SnO2}, produced artificially as
   a white amorphous powder, and occurring naturally in the
   mineral cassiterite. It is used in the manufacture of
   white enamels, and, under the name of {putty powder}, for
   polishing glass, etc.