/ Thesaurus / S Synonyms of stannous fluoride Find synonyms for: Noun1. stannous fluoride, fluorideusage: a white powder that is used to fluoridate toothpasteWordNet 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