cochlea

[kok-lee-uh, koh-klee-uh]
noun, plural cochleae [kok-lee-ee, -lee-ahy, koh-klee-ee, ‐klee-ahy] , cochleas. Anatomy.
a spiral-shaped cavity forming a division of the internal ear in humans and in most other mammals.

Origin:
1530–40; < Latin < Greek kochlíās snail (with spiral shell), screw, probably akin to kónchē conch

cochlear, adjective
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World English Dictionary
cochlea (ˈkɒklɪə)
 
n , pl -leae
the spiral tube, shaped like a snail's shell, that forms part of the internal ear, converting sound vibrations into nerve impulses
 
[C16: from Latin: snail, spiral, from Greek kokhlias; probably related to Greek konkhēconch]
 
'cochlear
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

cochlea
1688, "spiral cavity of the inner ear," from L. cochlea "snail shell," from Gk. kokhlias "snail, screw," etc., from kokhlos "spiral shell."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

cochlea coch·le·a (kŏk'lē-ə, kō'klē-ə)
n. pl. coch·le·as or coch·le·ae (-lē-ē')
A spiral-shaped cavity in the petrous portion of the temporal bone of the inner ear, containing the nerve endings essential for hearing and forming one of the divisions of the labyrinth.


coch'le·ar (-ər)
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cochlea   (kŏk'lē-ə)  Pronunciation Key 
Plural cochleae (kŏk'lē-ē', -lē-ī') or cochleas
A spiral-shaped cavity of the inner ear and the main organ of hearing. The cochlea contains the nerve endings that transmit sound vibrations from the middle ear to the auditory nerve.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Inside the cochlea, tiny hair cells convert the pulse into an electrical signal
  to the brain.
As the stapes bone rocks back and forth, it pushes against a fluid-filled
  structure called the cochlea in the inner ear.
We hear when the cochlea, in the inner ear, stimulates the auditory nerve.
Bone-conducted sound reaches the cochlea directly through the tissues of the
  head.
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