presbycusis

noun
pres·​by·​cu·​sis | \ ˌprez-bi-ˈkyü-səs, ˌpres- How to pronounce presbycusis (audio) \
plural presbycuses\ -​ˌsēz How to pronounce presbycuses (audio) \

Medical Definition of presbycusis

: a lessening of hearing acuteness resulting from degenerative changes in the ear that occur especially in old age

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