fenestration - surgical procedure that creates a new fenestra to the cochlea in order to restore hearing lost because of osteosclerosis

auditory apparatus - all of the components of the organ of hearing including the outer and middle and inner ears

fenestra - a small membrane-covered opening (especially one in the bone between the middle and inner ear)

medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques

audiology, audiometry - the measurement of hearing