/ Dictionary / Index M millihenry: Meaning and Definition of Find definitions for: mil•li•hen•ry Pronunciation: (mil'u-hen"rē), [key] — pl. -ries, -rys. a unit of inductance equal to one thousandth of a henry. Abbr.: mH, mh Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: millihenry (Thesaurus) milligram-hour Millikan Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language