semicircular duct
n.
Any of three small membranous tubes that lie within the bony labyrinth of the inner ear, form loops in planes at right angles to one another, and open into the vestibule.
Words nearby semicircular duct
semicanal,
semicentenary,
semicentennial,
semicircle,
semicircular canal,
semicircular duct,
semicivilized,
semiclassical,
semicolon,
semicoma,
semiconducting