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Vanadic \Va*nad"ic\, a. (Chem.) Pertaining to, or obtained from, vanadium; containing vanadium; specifically distinguished those compounds in which vanadium has a relatively higher valence as contrasted with the {vanadious} compounds; as, vanadic oxide. {Vanadic acid} (Chem.), an acid analogous to phosphoric acid, not known in the free state but forming a well-known series of salts.