geriatrics (n.)youdaoicibaDictYouDict[geriatrics 词源字典]
coined 1909 by Austrian-born doctor Ignatz L. Nascher (1863-1944) in "New York Medical Journal" on the model of pediatrics (also see -ics), from the same elements found in geriatric (q.v.). The correct formation would be gerontiatrics.[geriatrics etymology, geriatrics origin, 英语词源]