vanadic, a.
Pertaining to, or obtained from, vanadium; containing vanadium; specifically, designating those compounds in which vanadium has a relatively higher valence as contrasted with the vanadous compounds; as, vanadic oxide. [1913 Webster]
Vanadic acid (Chem.), an acid analogous to phosphoric acid, not known in the free state but forming a well-known series of salts.