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English definition of “tympanum”

tympanum

noun [C] (plural tympana or tympanums) (also timpanum) /ˈtɪm.pə.nəm/ US  // specialized
an eardrum (= a thin piece of skin inside the ear that moves backwards and forwards when sound waves reach it, allowing you to hear sounds)The ear
(Definition of tympanum noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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