geriatrics
noun
[ dʒɛrɪˈatrɪks ]
• the branch of medicine or social science dealing with the health and care of old people.
geriatric
noun
• an old person who is receiving special care.
• "a rest home for geriatrics"
Origin:
1920s: from Greek gēras ‘old age’ + iatros ‘doctor’, on the pattern of paediatric .
