/ Thesaurus / M Synonyms of manganic acid Find synonyms for: Noun1. manganic acid, acidusage: a dibasic acid (H2MnO4) found only in solution and in manganate saltsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language