Definition: The top layer of the skin, or the uppermost layer of the epidermis, made up of tightly packed cells that are constantly being sloughed away.
Also Known As: Corneum, horny layer.
By Angela Palmer, About.com
Created: July 11, 2007
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
Learn how you can reduce your your numbers with these nutrition and exercise tips. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.