Dictionary & Thesaurus

tympanum

1.	(noun) the membrane in the ear that vibrates to sound
	Synonyms: eardrum, tympanic membrane
	Related Words: membrane, tissue layer

2.	(noun) a large hemispherical brass or copper drum with a drumhead that can be tuned by adjusting the tension on it
	Synonyms: kettle, kettledrum, timpani, tympani
	Related Words: percussion instrument, percussive instrument

3.	(noun) the main cavity of the ear; between the eardrum and the inner ear
	Synonyms: middle ear, tympanic cavity
	Related Words: bodily cavity, cavity, cavum