/ Dictionary / Index C contour line: Meaning and Definition of Find definitions for: con'tour line" Pronunciation: [key] a line joining points of equal elevation on a surface. the representation of such a line on a map. a line parallel to a trace. Cf. trace (def. 11). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. contour interval contour map Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language