/ Thesaurus / B Synonyms of barium sulfate Find synonyms for: Noun1. barium sulphate, barium sulfate, blanc fixe, sulfate, sulphateusage: a white insoluble radiopaque powder used as a pigmentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language