/ Dictionary / Index C cordierite: Meaning and Definition of Find definitions for: cor•di•er•ite Pronunciation: (kôr'dē-u-rīt"), [key] — n. a strongly dichroic blue mineral consisting of a silicate of magnesium, aluminum, and iron: common in metamorphic rocks. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cordierite (Thesaurus) cordiality cordiform Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language