presbycusisyoudaoicibaDictYouDict[presbycusis 词源字典]
"Deterioration of hearing commonly occurring with advancing age, usually affecting both ears and beginning with reduced sensitivity to higher-pitched sounds", Late 19th cent.; earliest use found in John S. Billings (1838–1913). From presby- + ancient Greek ἄκουσις hearing. The some forms show an alteration with suffix substitution: compare -ia.[presbycusis etymology, presbycusis origin, 英语词源]