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(Medicine) the branch of medicine concerned with the elderly and the phenomena associated with ageing; geriatrics and gerontology
[C19: from gerato-, from Greek gēras old age + -logy]
the branch of biology that studies aging and its phenomena. Also gereology. — geratologic, geratologous, adj.See also: Decaying
the study of the decline of life, as in old age. — geratologic, geratological, geratologous, adj.See also: Old Age