/ Dictionary / Index M millilambert: Meaning and Definition of Find definitions for: mil•li•lam•bert Pronunciation: (mil'u-lam"burt), [key] — n. Optics. a unit of luminance equal to one thousandth of a lambert. Abbr.: mL Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Millikan milliliter Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language