/ Thesaurus / G Synonyms of great circle Find synonyms for: Noun1. great circle, lineusage: a circular line on the surface of a sphere formed by intersecting it with a plane passing through the centerWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: chicory Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language