the inner portion of the ear, involved in hearing and balance, consisting of a bony labyrinth that is composed of a vestibule, semicircular canals, and a cochlea and that encloses a membranous labyrinth. Cf. ear 1 (def. 1). See diag. under ear 1 .
INTERNAL EAR
Meaning of INTERNAL EAR in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012