semicircular canals of bony labyrinth

sem·i·cir·cu·lar ca·nals of bo·ny la·by·rinth

(sem'ē-sĭr'kyū-lăr kă-nalz' bō'nē lab'i-rinth)
The organ of balance; the three bony tubes in the labyrinth of the ear within which the membranous semicircular ducts are located; they lie in planes at right angles to each other and are known as anterior semicircular canal, posterior semicircular canal, and lateral semicircular canal.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012