/ Thesaurus / T Synonyms of trisodium phosphate Find synonyms for: Noun1. trisodium phosphate, trisodium orthophosphate, tribasic sodium phosphate, builder, detergent builderusage: the tertiary phosphate of sodium used as a builder in soaps and detergentsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language