/ Dictionary / Index P psychophysics: Meaning and Definition of Find definitions for: psy•cho•phys•ics Pronunciation: (sī"kō-fiz'iks), [key] — n. (used with a sing. v.) the branch of psychology that deals with the relationships between physical stimuli and resulting sensations and mental states. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: psychophysics (Thesaurus) psychophysical parallelism psychophysiological Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language