• WordNet 3.6
    • n tympan a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end
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Webster's Revised Unabridged Dictionary
    • Tympan A drum.
    • Tympan (Print) A frame covered with parchment or cloth, on which the blank sheets are put, in order to be laid on the form to be impressed.
    • Tympan (Arch) A panel; a tympanum.
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Century Dictionary and Cyclopedia
    • n tympan A timbrel or drum.
    • n tympan An ancient Irish musical instrument, the exact nature of which is disputed. Probably it had strings, and was played with a bow, thus resembling the crowd.
    • n tympan A stretched membrane, or a tense sheet of some thin material, as that of a drumhead.
    • n tympan In a printing-press having a platen, a framed appliance interposed between the platen and the sheet to be printed, for softening and equalizing the pressure, by means of blankets between its two parts; the outer and the inner tympan. The latter has a frame fitting snugly into that of the former, and both are tightly covered with parchment or strong linen cloth. In a hand-press the tympan is hinged to the outer end of the bed, has the frisket fixed by hinges to its top, receives the sheets to be printed, and completely covers the bed when folded down upon it, the platen, when lowered, fitting into the frame of the inner tympan. See cut under printing-press.
    • n tympan In anatomy, a tympanum.
    • n tympan In architecture, a tympanum.
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Chambers's Twentieth Century Dictionary
    • n Tympan tim′pan an ancient Irish musical instrument: a frame covered with parchment or cloth, on which the blank sheets are placed to be impressed.
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Webster's Revised Unabridged Dictionary
F., fr. L. tympanum, a kettledrum, a panel of a door. See Tympanum, and cf. Tymp
Chambers's Twentieth Century Dictionary
Fr.,—L. tympanum, a drum.


In literature:

Turnbull has recorded two cases of perforation of the tympanic membrane from lumbricoides.
"Anomalies and Curiosities of Medicine" by George M. Gould
This tube is generally closed, the air space behind the tympanic membrane being thus cut off from the external air.
"The Dominion of the Air" by J. M. Bacon
The tympanic cavity communicates with the back part of the throat, by the Eustachian tube.
"A Practical Physiology" by Albert F. Blaisdell
A "receiving apparatus" is needed, and is supplied by the ear-drum, middle ear, or tympanic cavity (T.).
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
Tympanal: applied to organs covered with a tympanum or stretched membrane supposed to function as ears.
"Explanation of Terms Used in Entomology" by John. B. Smith
The abdomen may increase suddenly in volume from accumulation of gas in tympanic colic.
"Special Report on Diseases of the Horse" by United States Department of Agriculture
Nothing remained now but to adjust the guides which would hold the cards on the tympan.
"The Adventures of Bobby Orde" by Stewart Edward White
It is closed internally by the tympanic membrane, which separates it from the tympanic cavity or middle ear.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
If percussion is resorted to, the animal's chest will give a tympanic, drumlike sound.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
He had a large tympanic membrane or "ear" on his ventral surface.
"Stamped Caution" by Raymond Zinke Gallun
A practical pressman says that a sheet of paper wet with glycerine and used as a tympan-sheet will prevent off-setting.
"Paper and Printing Recipes" by J. Sawtelle Ford
Hind feet densely covered with long hair; ear short; tympanic bulla of moderate size.
"A Synopsis of the North American Lagomorpha" by E. Raymond Hall
The auditory bulla and the tympanic are divided by an internal partition.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4" by Various
Snakes have no tympanic membrane.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
After the birth of the embryo, air reaches the tympanic cavity, which then enlarges.
"Embryology" by Gerald R. Leighton
Margin of tympanic cavity evenly curved.
"Trees. A Woodland Notebook" by Herbert Maxwell
Margin of tympanic cavity evenly curved.
"Extinct Birds" by Walter Rothschild
In the cut at the head of this article, the pressman is represented as in the act of turning down the frisket upon the tympan.
"Popular Technology; Volume 2" by Edward Hazen
It is a decided advantage to have two tympans in use, one for small stones and another for the larger sizes.
"Practical Lithography" by Alfred Seymour
The ears have no external parts, other than the thin tympanic membranes.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg

In news:

Cholesteatomas are believed to form as the result of poor eustachian tube function with resultant tympanic membrane retraction and a lack of normal epithelial migration.
When you hear a sound, vibrations in the ear are transmitted to the tympanic (TIM-PAN-ICK) membrane, or eardrum , and then to the inner ear, where they're converted to nerve impulses and sent to the brain.
Incidence of tympanic membrane perforation after intratympanic steroid treatment through myringotomy tubes.
The eardrum (tympanic membrane) separates the ear canal from the middle ear.
Juvenile xanthogranuloma of the tympanic membrane : A case report.
Incidence of tympanic membrane perforation after intratympanic steroid treatment through myringotomy tubes.
Assessments of the size of tympanic membrane perforations: A comparison of clinical estimations with video-otoscopic calculations.
Assessments of the size of tympanic membrane perforations: A comparison of clinical estimations with video- otoscopic calculations.
The frequency of adverse events related to the IT injection of steroids is low, with pain, short-lasting vertigo, otitis media, and tympanic perforations being the most common complications.
It appears that there is a significantly increased incidence of tympanic membrane perforations in this population.