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osseous labyrinth in Medicine
A series of cavities in the petrous portion of the temporal bone, consisting of the cochlea, the vestibule, and the semicircular canals, and lodging the membranous labyrinth.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.