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tym·pa·num also tim·pa·num  (tĭmpə-nəm)
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Tweet n. pl. tym·pa·na (-nə) or tym·pa·nums also tim·pa·na or tim·pa·nums 1. a. Anatomy See middle ear. b. See eardrum. 2. Zoology A membranous external auditory structure, as in certain insects. 3. Architecture a. The ornamental recessed space or panel enclosed by the cornices of a triangular pediment. b. A similar space between an arch and the lintel of a portal or window. 4. The diaphragm of a telephone. [Medieval Latin, from Latin, drum, from Greek tumpanon.]  (click for a larger image) tympanumover the main door of the Cathedral of Notre-Dame Chartres, France |
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