Source : Webster's Revised Unabridged Dictionary (1913)

Manganic \Man`gan"ic\, a. [Cf. F. manganique.] (Chem.)
   Of, pertaining to resembling, or containing, manganese;
   specif., designating compounds in which manganese has a
   higher valence as contrasted with manganous compounds. Cf.
   {Manganous}.

   {Manganic acid}, an acid, {H2MnO4}, formed from manganese,
      analogous to sulphuric acid.