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单词 tympanum
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]
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更新时间:2025/3/10 3:17:57