semicircular duct

semicircular duct definition - medical

semicircular duct

noun
Any of three small membranous tubes that lie within the bony labyrinth of the inner ear, form loops in planes at right angles to one another, and open into the vestibule.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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