/ Dictionary / Index L Lucite: Meaning and Definition of Find definitions for: Lu•cite Pronunciation: (l'sīt), [key] — Trademark. Trademark. a transparent or translucent plastic, any of a class of methyl methacrylate ester polymers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lucite (Thesaurus) Lucinda Lucius Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language