/ Dictionary / Index M microphysics: Meaning and Definition of Find definitions for: mi•cro•phys•ics Pronunciation: (mī"kru-fiz'iks), [key] — n. (used with a sing. v.) the branch of physics dealing with physical objects that are not large enough to be observed and treated directly, as elementary particles, atoms, and molecules. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microphotometer microphyte Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language