/ Thesaurus / D Synonyms of displacement reaction Find synonyms for: Noun1. displacement, displacement reaction, chemical reaction, reactionusage: (chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compoundWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language