/ Thesaurus / T Synonyms of tetrabasic acid Find synonyms for: Noun1. tetrabasic acid, acidusage: an acid containing four replaceable hydrogen atoms per moleculeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language