/ Dictionary / Index C circumference: Meaning and Definition of Find definitions for: cir•cum•fer•ence Pronunciation: (sur-kum'fur-uns), [key] — n. the outer boundary, esp. of a circular area; perimeter: the circumference of a circle. the length of such a boundary: a one-mile circumference. the area within a bounding line: the vast circumference of his mind. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: circumference (Thesaurus) circumcolumnar circumferential Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language