Tympanum definition

tĭmpə-nəm
(zoology) A membranous external auditory structure, as in certain insects.
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The diaphragm of a telephone.
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The ornamental recessed space or panel enclosed by the cornices of a triangular pediment.
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A similar space between an arch and the lintel of a portal or window.
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A drum or drumhead.
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(elec.) The diaphragm of a telephone.
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A drumlike structure serving as a vibratory membrane for the hearing organs of certain insects.
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The resonating chamber of the syrinx in birds.
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The recessed space, usually triangular, enclosed by the slanting cornices of a pediment, often ornamented with sculpture.
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A corresponding semicircular space enclosed by an arch and the top of the door or window below it.
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(zoology) A membranous external auditory structure, as in certain insects.
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The diaphragm of a telephone.
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(architecture) A triangular space between the sides of a pediment.
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(architecture) The space within an arch, and above a lintel or a subordinate arch, spanning the opening below the arch.
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The middle ear.
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The eardrum.
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A hearing organ in frogs, toads and some insects.
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(engineering) A drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged; used for raising water, as for irrigation.
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Other Word Forms

Noun

Singular:
tympanum
Plural:
tympana, tympanums

Origin of tympanum

  • Medieval Latin from Latin drum from Greek tumpanon

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin tympanum, from Ancient Greek τύμπανον (tumpanon), from τύπτω (tuptō, “I strike, I hit").

    From Wiktionary