tympanic cavity tym·pa·nic·cavity uncommon noun 1. the main cavity of the ear; between the eardrum and the inner ear Synonymsmiddle eartympanic cavitytympanum Related words Broader terms cavity Parts auditory apparatus Part of ossicleEustachian tubemalleusincusstapes WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
