/ Dictionary / Index C -clase: Meaning and Definition of Find definitions for: -clase Pronunciation: [key] a combining form used in the formation of compound words that denote minerals with a particular cleavage, as specified by the initial element: oligoclase; plagioclase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. clary clash Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language