/ Dictionary / Index M machmeter: Meaning and Definition of Find definitions for: mach•me•ter Pronunciation: (mäk'mē"tur, mak'-), [key] — n. Aeron. a device that indicates airspeed relative to the speed of sound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: machmeter (Thesaurus) machismo mach number Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language