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hear·ing

n :  the act or power of apprehending sound : specif  :  one of the special senses of vertebrates that is concerned with the perception of sound, is mediated through the organ of Corti of the ear in mammals, is normally sensitive in humans to sound vibrations between 16 and 27,000 hertz but most receptive to those between 2000 and 5000 hertz, is conducted centrally by the cochlear branch of the auditory nerve, and is coordinated esp. in the medial geniculate body .
 
 

 
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