middle ear midd·leear uncommon noun 1. the main cavity of the ear; between the eardrum and the inner ear Synonymsmiddle eartympanic cavitytympanum Related words Word family middle-ear deafness Broader terms cavity Parts auditory apparatus Part of ossicleEustachian tubemalleusincusstapes WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
