• Webster's Revised Unabridged Dictionary
    • n Tympanal Tympanic.
    • ***
Century Dictionary and Cyclopedia
    • n tympanal The posterior one of the pterygoid bones in fishes: it is usually between the hyomandibular and the mesopterygoid: same as metapterygoid, 2.
    • n tympanal The upper anterior bone of the gill-cover in fishes: not homologous with the bone called tympanal by Cuvier: Same as præoperculum, 2.
    • tympanal Same as tympanic.
    • ***
Chambers's Twentieth Century Dictionary
    • adjs Tympanal like a drum: pertaining to the tympanum
    • ***


Chambers's Twentieth Century Dictionary
L.,—Gr. tympanon, typanon, a kettledrum—typtein, to strike.


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
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
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 tympanic is welded with the periotic, which is attached to the base of the skull by two strong diverging processes.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
Snakes have no tympanic membrane.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
In the skull the orbit is surrounded by bone, and the tympanic has a bulla and an ossified external meatus.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4" by Various
After the birth of the embryo, air reaches the tympanic cavity, which then enlarges.
"Embryology" by Gerald R. Leighton
The post-tympanic dark marks and dark mottling on the flanks are absent.
"Neotropical Hylid Frogs, Genus Smilisca" by William E. Duellman
The tympanic ring has been held to be the equivalent of the quadrate.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
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.