n. (pl. conchae) (in anatomy) any part resembling a shell. For example, the concha auriculae is a depression on the outer surface of the pinna (auricle), which leads to the external auditory meatus of the outer ear. See also nasal concha.
(turbinate bone) any of three thin scroll-like bones that form the sides of the *nasal cavity. The superior and middle nasal conchae are part of the *ethmoid bone; the inferior nasal conchae are a separate pair of bones of the face. See skull.... nasal concha