/ Dictionary / Index C contour interval: Meaning and Definition of Find definitions for: con'tour in"terval Pronunciation: [key] the difference in elevation represented by each contour line on a topographic map. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. contour integration contour line 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