/ Dictionary / Index C cultured pearl: Meaning and Definition of Find definitions for: cul'tured pearl' Pronunciation: [key] a pearl induced to form by placement of a grain of sand or another irritating object within the shell of a pearl oyster or mussel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. culture diffusion culture factor Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language