psychophysiology Syllabification: (psy·cho·phys·i·ol·o·gy)Pronunciation: /ˌsīkōˌfizēˈäləjē/Definition of psychophysiology noun Psychology the study of the relationship between physiological and psychological phenomena. the way in which the mind and body interact. Derivatives psychophysiologicalPronunciation: /-ˌfizēəˈläjikəl/ adjective psychophysiologistPronunciation: /-jist/ noun psychophysiology in other Oxford dictionaries Definition of psychophysiology in the British & World English dictionary