释义 |
tym·pa·num \ˈtimpənəm\ noun (plural tympa·na \-nə\ ; also tympanums) Etymology: Medieval Latin & Latin; Medieval Latin tympanum eardrum, from Latin, drum, architectural panel, from Greek tympanon drum, kettledrum; akin to Greek typtein to strike, beat — more at type 1. a. (1) : the tense double membrane separating the outer and middle ear : tympanic membrane — called also eardrum (2) : middle ear b. : a thin tense membrane covering an organ of hearing (as in the leg) of an insect — see insect illustration c. (1) : a membrane in a sound-producing organ that acts as a resonator (2) : tracheal tympanum d. : one of the naked areas on the neck of the prairie chicken and other grouse that are expanded when the esophagus is inflated in display 2. a. : the recessed face of a pediment situated within the frame made by the upper and lower cornices and usually shaped like a triangle or panel b. : the space within an arch and above a lintel or a subordinate arch spanning the opening below the arch 3. : tympan 1a 4. : a water-raising wheel resembling a Persian wheel 5. : epiphragm 2a 6. : the diaphragm of a telephone
[1 tympanum 2a] |