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Loss of hearing sensitivity as a result of ageing, usually characterized by gradual loss of sensitivity to high-frequency sounds through deterioration of the organ of Corti. Also spelt presbyacousis. Also called presbyacusia or presbyacousia. See also deafness, sensorineural deafness. presbyacusic adj. [From Greek presbys old + akousis hearing, from akouein to hear + -ia indicating a condition or quality]

Subjects: Psychology.

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