geriatrics

詳細解釋：

ger.i.at.rics

n.(used with a sing. verb)（名詞）（與單數動詞連用）
The branch of medicine that deals with the diagnosis and treatment of diseases and problems specific to the aged.
老年病學：研究對老年人疾病和問題的診斷和治療的醫學分支

來源：
Greek gôras [old age] * see ger…-
希臘語 gôras [老年] *參見 ger…-
-iatrics
-iatrics