/ Thesaurus / A Synonyms of agar agar Find synonyms for: Noun1. agar, agar-agar, gumusage: a colloidal extract of algae; used especially in culture media and as a gelling agent in foodsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language