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eardrum
7 dictionary results for: eardrum
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
ear·drum       [eer-druhm] Pronunciation Key
–noun Anatomy, Zoology.
a membrane in the ear canal between the external ear and the middle ear; tympanic membrane.

[Origin: 1635–45; ear1 + drum1]
American Heritage Dictionary - Cite This Source - Share This
ear·drum       (îr'drŭm')  Pronunciation Key 
n.   The thin, semitransparent, oval-shaped membrane that separates the middle ear from the external ear. Also called tympanic membrane, tympanum.

WordNet - Cite This Source - Share This
eardrum

noun
the membrane in the ear that vibrates to sound 

The American Heritage Science Dictionary - Cite This Source - Share This
eardrum       (îr'drŭm')  Pronunciation Key 
The thin, oval-shaped membrane that separates the middle ear from the outer ear. It vibrates in response to sound waves, which are then transmitted to the ossicles of the middle ear. Also called tympanic membrane.

American Heritage New Dictionary of Cultural Literacy, Third Edition - Cite This Source - Share This
eardrum

The membrane that divides the outer ear from the middle ear. The vibrations of this membrane in response to sound waves lead to the sensation of hearing. Also called the tympanic membrane.


American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

eardrum ear·drum (ēr'drŭm')
n.
The thin, semitransparent, oval-shaped membrane that separates the middle ear from the external ear. Also called drum, drumhead, drum membrane, myringa, myrinx, tympanic membrane, tympanum.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Eardrum

Ear"drum`\, n. (Anat.) The tympanum. See Illust. of Ear.

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