ge·ri·at·rics /ˌdʒeriˈætrɪks/ noun [uncountableU]MHOLD/NOT YOUNGthe medical treatment and care of old people 老年醫學,老年病學 → gerontologyn Geriatrics is followed by a singular verb: Geriatrics is a growth area of medicine.
—geriatrician /ˌdʒeriəˈtrɪʃən/ noun [countableC]