/ Thesaurus / V Synonyms of vanadic acid Find synonyms for: Noun1. vanadium pentoxide, vanadic acid, oxyacid, oxygen acidusage: any of various oxyacids of vanadium; known mostly in the form of its saltsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language