/ Thesaurus / D Synonyms of differential equation Find synonyms for: Noun1. differential equation, equationusage: an equation containing differentials of a functionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language