/ Dictionary / Index C copper pyrites: Meaning and Definition of Find definitions for: cop'per pyri'tes Pronunciation: [key] — Mineral. Mineral. chalcopyrite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. copperplate Copper River 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