/ Dictionary / Index G great-circle track: Meaning and Definition of Find definitions for: great'-cir'cle track" Pronunciation: [key] the route of a ship following the arc of a great circle, appearing as a curved line on a Mercator chart and as a straight line on a gnomonic chart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. great-circle sailing greatcoat Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language