gestaltism ge·stalt·ism (gə-shtäl'tĭz'əm, -shtôl'-, -stäl'-, -stôl'-)
n.
The school or theory of psychology that emphasizes the wholeness and organized structure of every psychological, physiological, and behavioral experience, maintaining that experiences are not reducible and thus cannot be derived from a simple summation of perceptual elements such as sensation and response. Also called Gestalt psychology.