psychogeriatrics Syllabification: (psy·cho·ger·i·at·rics)Pronunciation: /ˌsīkōˌjerēˈatriks/Definition of psychogeriatrics noun [treated as singular] the branch of health care concerned with mental illness and disturbance in elderly people, particularly those who have suffered distress as a result of moving into an institution. Derivatives psychogeriatric adjective psychogeriatricianPronunciation: /-ˌjerēəˈtriSHən/ noun psychogeriatrics in other Oxford dictionaries Definition of psychogeriatrics in the British & World English dictionary