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vestibular organ in Medicine

vestibular organ

n.
  1. The structure composed of the utricle, saccule, and the three semicircular ducts of the membranous labyrinth of the inner ear.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.