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geratology

[jer-uh-tol-uh-jee] /ˌdʒɛr əˈtɒl ə dʒi/
noun, Biology.
1.
the study of the diminution or decline of life, as in an individual animal or a species approaching extinction.
Origin of geratology
Greek
1880-1885
1880-85; gerat- (erroneously taken as the stem of Greek gêras old age) + -o- + -logy
Related forms
geratologic
[jer-uh-tl-oj-ik] /ˌdʒɛr ə tlˈɒdʒ ɪk/ (Show IPA), geratologous
[jer-uh-tol-uh-guh s] /ˌdʒɛr əˈtɒl ə gəs/ (Show IPA), adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for geratology

geratology

/ˌdʒɛrəˈtɒlədʒɪ/
noun
1.
the branch of medicine concerned with the elderly and the phenomena associated with ageing; geriatrics and gerontology
Derived Forms
geratological (ˌdʒɛrətəˈlɒdʒɪkəl) adjective
geratologist, noun
Word Origin
C19: from gerato-, from Greek gēras old age + -logy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for geratology
noun

the scientific study of aging and extinction; also called gereology

Word Origin

Greek great- 'old age'

Dictionary.com's 21st Century Lexicon
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Word Origin and History for geratology
n.

"study of decadence," 1884, from Greek geras (genitive geratos) "old age" (see geriatric) + -logy.

Online Etymology Dictionary, © 2010 Douglas Harper
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