/ Dictionary / Index C chalcopyrite: Meaning and Definition of Find definitions for: chal•co•py•rite Pronunciation: (kal"ku-pī'rīt), [key] — n. a very common mineral, copper iron sulfide, CuFeS, occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chalcopyrite (Thesaurus) chalcophile chalcostibite Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language