tympanum
noun/ˈtɪmpənəm/
/ˈtɪmpənəm/
(plural tympanums, tympana
(anatomy)/ˈtɪmpənə/
/ˈtɪmpənə/
)- the eardrumWord Originearly 17th cent.: via Latin from Greek tumpanon ‘drum’, based on tuptein ‘to strike’.
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tympanum