/ Dictionary / Index M mlx: Meaning and Definition of Find definitions for: mlx Pronunciation: [key] millilux; millilucis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. MLW mM Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language