/ Dictionary / Index C cathodoluminescence: Meaning and Definition of Find definitions for: cath•o•do•lu•mi•nes•cence Pronunciation: (kath"u-dō-l"mu-nes'uns), [key] — n. light emitted by a substance undergoing bombardment by cathode rays. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cathodic protection catholic Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language