/ Thesaurus / Q Synonyms of quarter circle Find synonyms for: Noun1. quadrant, quarter-circle, lineusage: a quarter of the circumference of a circleWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language