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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

(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 ?
| Beat The Drum is free and takes |place in The Bewick Suite at The City Library, 6.30pm on Wednesday, December 17, 2014.
From Beat The Drum to Protect And Survive, they played as if the wind was at their backs.
BEAT THE DRUM: George Rafferty, chief executive of NOF Energy, said the awards are a way to celebrate success
Douglas will beat the drum for the Spanish island of Majorca at international tourism fairs over the next four years.
BEAT THE DRUM: Parents joined their children in staging a special performance at a Rhyl primary school last week.
Each team had 13 members - 12 to paddle and one to beat the drum to direct the pace.
There was no new material to promote but that didn't matter as we enjoyed a mix of songs including Everything You See, Beat the Drum, Edge of the World and Skye.
RUNRIG have announced the full line-up for their outdoor show at Loch Ness on Saturday, August 18.The Beat The Drum concert takes place at Borlum Farm, Drumnadrochit.