Source : Webster's Revised Unabridged Dictionary (1913)

Metatungstic \Met`a*tung"stic\, a. [Pref. meta- + tungstic.]
   (Chem.)
   Of, pertaining to, or designating, an acid known only in its
   salts (the metatungstates) and properly called polytungstic,
   or pyrotungstic, acid.