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Definition of Tympanic membrane

Tympanic membrane: The eardrum, a thin membrane that serves as a partition between the external ear and the middle ear and transmits the motion of sound waves to the chain of bones in the middle ear.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=5871
Last Editorial Review: 3/19/2012

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