auditory vesicle

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the pouch that is formed by the invagination of an ectodermal placode and that develops into the internal ear.

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Also called otic vesicle, otocyst.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

The lawyer claims that Hernandez has suffered from visual as well as auditory hallucinations.
Etan Patz: Painfully Obvious Evidence|Michael Daly|May 26, 2012|DAILY BEAST
As they walked up a path toward West End Avenue, I mustered the courage to move a few feet closer, within auditory range.
Encounters With Thomas Pynchon|Nick Romeo|October 5, 2011|DAILY BEAST
It has no external ears, but only auditory passages concealed under the hair.
Buffon's Natural History. Volume IX (of 10)|Georges Louis Leclerc de Buffon
As the auditory bullae become more inflated, the index increases toward 100.
Speciation in the Kangaroo Rat, Dipodomys ordii|Henry W. Setzer

The diagnostic characters were the length and breadth of the rostrum and the relatively great inflation of the auditory bullae.
Speciation in the Kangaroo Rat, Dipodomys ordii|Henry W. Setzer
Acoustic, a-kowst′ik, adj. pertaining to the sense of hearing or to the theory of sounds: used in hearing, auditory.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)|Various
The body may be compared to a harp of two chords,—the optic nerve and the auditory nerve.
Mysterious Psychic Forces|Camille Flammarion

auditory vesicle

Either of the paired sacs of invaginated ectoderm in the embryo that develop into the membranous labyrinth of the internal ear.otic vesicle