/ Dictionary / Index M milligal: Meaning and Definition of Find definitions for: mil•li•gal Pronunciation: (mil'i-gal"), [key] — n. a unit of acceleration, equal to one thousandth of a gal; one thousandth of a centimeter per second per second. Abbr.: mGal Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. millifarad milligram Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language