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A large, irregularly shaped cavity of the middle ear.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||tympanic cavity - the main cavity of the ear; between the eardrum and the inner ear|
auditory apparatus - all of the components of the organ of hearing including the outer and middle and inner ears
auditory tube, Eustachian tube - either of the paired tubes connecting the middle ears to the nasopharynx; equalizes air pressure on the two sides of the eardrum
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