/ Dictionary / Index C covariant: Meaning and Definition of Find definitions for: co•var•i•ant Pronunciation: (kō-vâr'ē-unt), [key] — adj. Math. (of one magnitude with respect to another) varying in accordance with a fixed mathematical relationship: The area of a square is covariant with the length of a side. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: covariant (Thesaurus) covariance Covarrubias Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language