tympanic membrane

noun Anatomy, Zoology.

Origin:
1855–60

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Collins
World English Dictionary
tympanic membrane
 
n
Also called: tympanum, Nontechnical name: eardrum the thin translucent oval membrane separating the external ear from the middle ear. It transmits vibrations produced by sound waves, via the ossicles, to the cochlea

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American Heritage
Medical Dictionary

tympanic membrane n.
See eardrum.

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
tympanic membrane   (tĭm-pān'ĭk)  Pronunciation Key 
See eardrum.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

tympanic membrane

membrane in the human ear that receives sound vibrations from the outer air and transmits them to the auditory ossicles, which are tiny bones in the tympanic (middle ear) cavity. It also serves as the lateral wall of the tympanic cavity, separating it from the external auditory canal. The membrane lies across the end of the external canal and looks like a flattened cone with its tip (apex) pointed inward. The edges are attached to a ring of bone, the tympanic annulus.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Also called the tympanic membrane grave: noun: specific place where a body is buried.
At the receiving end, the outer ears collect the waves' energy, causing vibrations in the tympanic membrane-the eardrum.
Those oscillations exerted pressure onto the tympanic membrane in your ears.
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