acoustic meatus n.
The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; external acoustic meatus.
A canal running through the petrous portion of the temporal bone, giving passage to the facial and vestibulocochlear nerves and to the labyrinthine artery and veins; internal acoustic meatus.
- Acoustic mine
a naval mine designed to be exploded by the vibration of the propeller of a passing ship or by the sound of water along the hull.
- Acoustic nerve
. either one of the eighth pair of cranial nerves, consisting of sensory fibers that conduct impulses from the organs of hearing and from the semicircular canals to the brain. Historical Examples There would be no sound without the acoustic nerve and the brain. Urania Camille Flammarion acoustic nerve: connects the auditory pits or other […]
- Acoustic neurilemoma
acoustic neurilemoma acoustic neurilemoma n. A benign neoplasm of the intracranial segment of the eighth cranial nerve. Also called acoustic neuroma.
- Acoustic neuroma
noun a benign brain tumour of the vestibulocochlear nerve, one of the nerves connecting the ear to the brain, which can cause hearing and balance problems
- Acoustic ohm
the unit of acoustic impedance, equal to the impedance of a medium in which a sound pressure of one dyne per square centimeter produces a velocity of one centimeter per second.