I. ˌjer-ē-ˈa-trik, ˌjir- noun
Date: 1909
1. plural but singular in construction : a branch of medicine that deals with the problems and diseases of old age and aging people — compare gerontology
2. : an aged person
II. adjective
Etymology: Greek gēras old age + English -iatric
Date: 1926
1.
a. : of or relating to geriatrics or the process of aging
b. : of, relating to, or appropriate for elderly people
the geriatric set
2.
a. : old , elderly
a geriatric dachshund
b. : being old and outmoded
geriatric airplanes