Definition of gerontology noun from the Oxford Advanced Learner's Dictionary

 

gerontology

 noun
noun
BrE BrE//ˌdʒerɒnˈtɒlədʒi//
 
; NAmE NAmE//ˌdʒerənˈtɑːlədʒi//
 
[uncountable] Old age
 
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the scientific study of old age and the process of growing old See related entries: Old age Word Origin early 20th cent.: from Greek gerōn, geront- ‘old man’ + -logy.
See the Oxford Advanced American Dictionary entry: gerontology