— psychophysical /suy'koh fiz"i keuhl/ , psychophysic , adj. — psychophysically , adv. — psychophysicist /suy'koh fiz"euh sist/ , n.
/suy'koh fiz"iks/ , n. ( used with a sing. v. )
the branch of psychology that deals with the relationships between physical stimuli and resulting sensations and mental states.
[ 1875-80; Psychophysik. See PSYCHO-, PHYSICS ]