Definition of presbycusis in US English:

presbycusis

noun

Medicine
  • Deterioration of hearing commonly occurring with advancing age, usually affecting both ears and beginning with reduced sensitivity to higher-pitched sounds.

Origin

Late 19th century; 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.