/ Dictionary / Index C chalcostibite: Meaning and Definition of Find definitions for: chal•co•stib•ite Pronunciation: (kal"ku-stib'īt), [key] — n. a mineral, antimony copper sulfide, CuSbS, occurring in lead-gray crystals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chalcopyrite chalcotrichite 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