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gerontomorphosis

[juh-ron-tuh-mawr-fuh-sis] /dʒəˌrɒn təˈmɔr fə sɪs/
noun
1.
Biology. evolutionary specialization of a species to a degree that decreases its capability for further adaptation and eventually leads to its extinction.
Origin
geronto- + morphosis
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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