tympanic
adjective medical specialized uk/tɪmˈpæn.ɪk/ us/tɪmˈpæn.ɪk/
鼓膜的
relating to the eardrum (= the thin piece of skin inside the ear that moves backwards and forwards when sound waves reach it, allowing you to hear sounds)
the tympanic cavity/membrane 鼓室／鼓膜