Definition:
tympanum
- tympanumthe middle ear, also TIMPANUM
- tympanumA membrane covering the hearing organ on the leg or body of some insects, sometimes adapted (as in cicadas) for producing sound
- tympanumA drum
- tympanumThe tympanic membrane or eardrum
- tympanumA vertical recessed triangular space forming the center of a pediment, typically decorated
- tympanumA similar space over a door between the lintel and the arch