/ Dictionary / Index C crystal defect: Meaning and Definition of Find definitions for: crys'tal de"fect Pronunciation: [key] — Crystall. Crystall. defect (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crystal-clear crystal detector 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