/ Thesaurus / M Synonyms of methyl orange Find synonyms for: Noun1. methyl orange, azo dye, acid-base indicatorusage: an azo dye used as an acid-base indicator; used for titrations involving weak basesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language