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tym·pan·ic mem·brane

[TA]
a thin tense membrane forming the greater part of the lateral wall of the tympanic cavity and separating it from the external acoustic meatus; it constitutes the boundary between the external and middle ears; it is a trilaminar membrane covered with skin on its external surface, mucosa in its internal surface, is covered on both surfaces with epithelium, and, in the tense part, has an intermediate layer of outer radial and inner circular collagen fibers.

drum

(drum) tympanic membrane.

drum

(drŭm)
n.
Anatomy The eardrum.

tym·pan·ic mem·brane

(tim-pan'ik mem'brān) [TA]
A thin, tense covering that forms the greater part of the lateral wall of the tympanic cavity and separates it from the external acoustic meatus; it constitutes the boundary between the external and middle ear, is covered on both surfaces with epithelium, and in the tense part has an intermediate layer of outer radial and inner circular collagen fibers.
Synonym(s): membrana tympani [TA] , drum membrane, drum, drumhead, eardrum, myringa, myrinx.
[L. membrana tympani]
References in periodicals archive ?
When it comes to magnetic drum separators and scrap drums, the magnetic power of new magnetic drum separators may be incorporated into an old model.
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With this the mix of media and ceramic is guided as a thin curtain between two extra wide magnetic drums.
Magnetic drums have permanent magnets for continuous, low-cost separation and can be installed inside closed chutes, at outlets of chutes and hoppers, or where materials discharge from feeders and conveyors.
Products featured in the brochure include E-Z Tec DSP metal detectors, E-Z Tec 9100 metal separators, Metalarm metal grate magnets, PolyMag resin separators, rare earth roll separators, PolyMag additives, round pipe magnetic separators, RF (radial field) cartridge magnets, magnetic drums, vibratory conveyors, feeders and screeners, volumetric feeder machines and bin vibrators, and more.
This was followed by punched paper tape, magnetic drums, magnetic disk packs, 8" floppy disks, 5 1/4" floppy disks, 3 1/2" diskettes and USB memory drives.
Walker Magnetics manufactures magnetic pulleys, suspended magnets, magnetic drums and eddy current separators for the recycling industries.
a major pioneer whose commitment dates back to the 1970s when it developed a machine for mainframe computers' magnetic drums, says Toshiyuki Yamada of the Japan Society for the Promotion of Machine Industry (Tokyo).
Self-cleaning magnetic drums and drum separators provide continuous removal of ferrous contaminants from a wide range of free-flowing bulk and granular materials in high-volume applications.