Gerontology
WordNet
noun
(1) The branch of medical science that deals with diseases and problems specific to old people
WiktionaryText
Noun
- the study of the elderly, and of the aging process itself.
- the branch of science that deals with the problems of aged people. It is to be distinguished from geriatrics, which is the study of the diseases of the elderly. Gerontology covers the social, psychological and biological aspects of aging.