/ Thesaurus / P Synonyms of polar circle Find synonyms for: Noun1. polar circle, latitude, line of latitude, parallel of latitude, parallelusage: a line of latitude at the north or south polesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: bibliophile Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language