/ Dictionary / Index M micromotion: Meaning and Definition of Find definitions for: mi•cro•mo•tion Pronunciation: (mī'kru-mō"shun), [key] — n. a motion, esp. a periodic one, of very short duration or length. (in time and motion study) the analysis of the time of a work performance in its basic subdivisions with the aid of a timing apparatus, motion-picture equipment, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microminiaturize micromount Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language