/ Thesaurus / S Synonyms of sodium phosphate Find synonyms for: Noun1. sodium phosphate, sodium orthophosphate, phosphate, orthophosphate, inorganic phosphateusage: phosphate of sodium; used as a laxative to cleanse the bowelsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language