Definition of cochlea noun from the Oxford Advanced Learner's Dictionary

 

cochlea

 noun
noun
BrE BrE//ˈkɒkliə//
 
; NAmE NAmE//ˈkoʊkliə//
 
, NAmE//ˈkɑːkliə//
 
(pl. cochleae
BrE BrE//ˈkɒkliiː//
 
; NAmE NAmE//ˈkoʊkliiː//
 
, NAmE//ˈkɑːkliiː//
 
)
(anatomy)
 
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a small curved tube inside the ear, which contains a small part that sends nerve signals to the brain when sounds cause it to vibrate Word Origin mid 16th cent. (used to denote spiral objects): from Latin, ‘snail shell or screw’, from Greek kokhlias. The current sense dates from the late 17th cent.
See the Oxford Advanced American Dictionary entry: cochlea