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| intermediate portion of the ear consisting of a small air-filled membrane-lined chamber |
| larger of two sacs in the membranous labyrinth of the internal ear |
| external ear | |
| —n | |
| the part of the ear consisting of the auricle and the auditory canal | |
external ear n.
The outer portion of the ear including the auricle and the passage leading to the eardrum. Also called outer ear.