/ Dictionary / Index L luminiferous: Meaning and Definition of Find definitions for: lu•mi•nif•er•ous Pronunciation: (l"mu-nif'ur-us), [key] — adj. producing light: the luminiferous properties of a gas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. luminescence luminism Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language