| 单词 | tympanum |
| 释义 | tympanum /tim"peuh neuhm/, n. , pl. tympanums, tympana /-neuh/. 1. Anat. , Zool. a. See middle ear. b. See tympanic membrane. 2. Archit. a. the recessed, usually triangular space enclosed between the horizontal and sloping cornices of a pediment, often decorated with sculpture. b. a similar space between an arch and the horizontal head of a door or window below. 3. Elect. the diaphragm of a telephone. 4. a drum or similar instrument. 5. the stretched membrane forming a drumhead. [1610-20; < L < Gk týmpanon drum, akin to týptein to beat, strike] |
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