Definition of semicircular canals in US English:

semicircular canals

plural noun

  • Three fluid-filled bony channels in the inner ear. They are situated at right angles to each other and provide information about orientation to the brain to help maintain balance.

    • ‘The pathology usually lies in the posterior semicircular canal of the inner ear.’
    • ‘The second class of vestibular illusions is concerned with angular accelerations which are sensed by the fluid-filled semicircular canals of the vestibular apparatus.’
    • ‘Apart from the sound-processing faculty our ears also include the labyrinth, an intricate set of fluid-filled semicircular canals that provide information for our three-dimensional sense of equilibrium.’
    • ‘The receptor organ of posture and equilibrium is a composite one located in the semicircular canals, the utricle, and the saccule of the inner ear.’
    • ‘The unique semicircular canals of the inner ear continuously inform the brain of the head and body's position.’