Tympanum
noun, plural tympanums, tympana
[tim-puh-nuh] /ˈtɪm pə nə/ (Show IPA)
1.
Anatomy, Zoology.
middle ear.
tympanic membrane.
2.
Architecture.
the recessed, usually triangular space enclosed between the horizontal and sloping cornices of a pediment, often decorated with sculpture.
a similar space between an arch and the horizontal head of a door or window below.
3.
Electricity. the diaphragm of a telephone.
4.
a drum or similar instrument.
5.
the stretched membrane forming a drumhead.
noun (pl) -nums, -na (-nə)
1.
the cavity of the middle ear
another name for tympanic membrane
2.
any diaphragm resembling that in the middle ear in function
3.
(architect) Also called tympan
the recessed space bounded by the cornices of a pediment, esp one that is triangular in shape and ornamented
the recessed space bounded by an arch and the lintel of a doorway or window below it
4.
(music) a tympan or drum
5.
a scoop wheel for raising water
tympanum tym·pa·num or tim·pa·num (tĭm’pə-nəm)
n. tym·pa·nums or tym·pa·na (-nə)
See middle ear.
See eardrum.
Read Also:
- Tympany
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- Tyndall
noun 1. John, 1820–93, English physicist. 2. Mount, a mountain in S central California, in the Sierra Nevada near Mount Whitney. 14,018 feet (4273 meters). noun 1. John. 1820–93, Irish physicist, noted for his work on the radiation of heat by gases, the transmission of sound through the atmosphere, and the scattering of light
- Tyndall-beam
noun, Physical Chemistry. 1. the visible path of light produced by the scattering action (Tyndall effect) of the particles in a colloidal solution on a beam of light passed through it.
- Tyndall-effect
noun, Physical Chemistry. 1. the visible path of light produced by the scattering action (Tyndall effect) of the particles in a colloidal solution on a beam of light passed through it.
- Tyndallimetry
/ˌtɪndəlˈɪmətrɪ/ noun 1. (chem) the determination of the concentration of suspended material in a liquid by measuring the amount of light scattered
