tympanic bone

noun Anatomy, Zoology.
(in mammals) a bone of the skull, supporting the tympanic membrane and enclosing part of the tympanum or middle ear.


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World English Dictionary
tympanic bone
the part of the temporal bone in the mammalian skull that surrounds the auditory canal

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

tympanic bone n.
The bony ring in the fetus that develops after birth into the tympanic part of the temporal bone of the skull, partially enclosing the middle ear and supporting the eardrum. Also called tympanic ring.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
Histology and growth of the cetacean petro-tympanic bone complex.
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