OTOSCLEROSIS

otosclerosis

(noun) hereditary disorder in which ossification of the labyrinth of the inner ear causes tinnitus and eventual deafness

Source: WordNet® 3.1

Etymology

Noun

otosclerosis (countable and uncountable, plural otoscleroses)

(pathology) Sclerosis of the tissues of the labyrinth and middle ear.

(pathology) Loss of hearing due to injury of the auditory nerve by certain drugs and poisons, such as quinine and tobacco.

(pathology) Loss of the ability to understand the spoken word, although the sound is heard.

Source: Wiktionary