noun Anatomy.
- any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium.
noun
- anatomy any of the three looped fluid-filled membranous tubes, at right angles to one another, that comprise the labyrinth of the ear: concerned with the sense of orientation and equilibrium
n.
- Any of three bony tubes in the labyrinth of the ear within which the semicircular ducts are located.
- Any of the three looped tubes of the inner ear that together with the vestibules makes up the organs that maintain equilibrium in vertebrates.