/ Dictionary / Index L Lucius: Meaning and Definition of Find definitions for: Lu•cius Pronunciation: (l'shus), [key] — n. a male given name: from a Latin word meaning “light.” Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lucite Lucius I Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language