ear science definition

1. The vertebrate organ of hearing, which in mammals is usually composed of three parts: the outer ear, middle ear, and inner ear. The organs of balance are also located in the ear.
2. An invertebrate organ analogous to the vertebrate ear.

ear¹

A. auricle, B. bone, C. semicircular canals, D. cochlea, E. acoustic nerve, F. eustachian tube, G. eardrum, H. ear canal