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tym·pan·ic mem·brane

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.
Farlex Partner Medical Dictionary © Farlex 2012


See eardrum.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
"We might not have best sets or costumes, but the love for the material and the universe and each other comes through." TREK THEATRE What: "The Drumhead" and "Pon Farr: A Green-Blooded Musical Love Story" When: 6 p.m.
The Duchess also cancelled her appearance at the solemn Drumhead service at Lee valley Athletics Centre with her husband and Harry on Sept.
THOUSANDS yesterday took part in a drumhead service at Edinburgh Castle as the city commemorated the centenary of World War I.
The drumhead is a calf-skin cover fastened with strings of rope while the base is left open and struck with bare hands.
"It was a drumhead service, with the drums piled up to make a makeshift altar, and the paratroopers were being dropped down all around us," he says.
As that "probably" concerning the skin drumhead illustrates, he isn't always certain.
The day will begin with a parade and a Drumhead Service in Cardiff Bay followed by a variety of exciting festivities, including displays, concert performances and a fly over finale.
This year's Armed Forces Day will include a traditional Drumhead Service at Roald Dahl Plass, Cardiff Bay, flyovers by the Battle of Britain Memorial Flight, the Red Arrows and Helicopter Formation, displays by the Royal Marine Commando Display Team and the Royal Marine Band, Search and Rescue Sea King Rescue Display on the water, the opportunity to go aboard HMS Kent, which will be docked in Roath Basin for the weekend and a firework finale over the waters of Cardiff Bay.
Further, the hoops attaching the drumhead to the shell often are diecast aluminum rings.
The rubber membrane was then stretched with a specialised mechanical stage to form a flat drumhead. Next, a pre-fabricated focal plane array and associated electronics--created by conventional planar processing--are transferred from a silicon wafer to the tensioned, drumhead membrane.
You then can put connectors on top of it and, by applying a certain amount of electricity and voltage, you can make the drumhead send sound waves.
From Bountiful Gardens (www.bountifulgardens.org or 707/459-6410), try 'Seven Hills' brussels sprouts, 'All Seasons' or 'Red Drumhead' cabbage, and 'All-the-Year-Round' or 'Purple Cape' cauliflower.