Vanadic /(?)/

Va·nad·ic

Vanadic

a.
  1. 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. (Chem.)

Phrases & Compounds
Vanadic acid
an acid analogous to phosphoric acid, not known in the free state but forming a well-known series of salts.