|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|
semicircular canal sem·i·cir·cu·lar canal (sěm'ĭ-sûr'kyə-lər)
Any of three bony tubes in the labyrinth of the ear within which the semicircular ducts are located.
|semicircular canal (sěm'ĭ-sûr'kyə-lər) Pronunciation Key
Any of the three looped tubes of the inner ear that together with the vestibules makes up the organs that maintain equilibrium in vertebrates.