acoustic nerve

n.
Either of the eighth pair of cranial nerves that divides to form the cochlear nerve and the vestibular nerve. Also called auditory nerve.

n
VIII

The eighth cranial nerve; the vestibulocochlear nerve; a sensory nerve consisting of a vestibular portion and an auditory (or cochlear) portion.

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The noun has one meaning:

Meaning #1: a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea
  Synonyms: auditory nerve, vestibulocochlear nerve, nervus vestibulocochlearis, eighth cranial nerve

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