Definition: a series of cavities (cochlea, vestibule, and semicircular canals) contained within the otic capsule of the petrous portion of the temporal bone; the bony labyrinth is filled with perilymph, in which the delicate, endolymph-filled membranous labyrinth is suspended.
Synonym(s): labyrinthus osseusTA, osseous labyrinth
See Also: otic capsule
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