Source : Webster's Revised Unabridged Dictionary (1913)

Tungstic \Tung"stic\, a. (Chem.)
   Of or pertaining to tungsten; derived from, or resembling,
   tungsten; wolframic; as, tungstic oxide.

   {Tungstic acid}, an acid of tungsten, {H2WO4}, analogous to
      sulphuric and chromic acids.

Source : WordNet®

tungstic acid
     n : an oxyacid of tungsten (often polymeric in nature) formed by
         neutralizing alkaline tungstate solutions