[ nō′sĭ-fĕn′sər ]
A process or mechanism that acts to protect the body from injury.
A system of nerves in the skin and mucous membranes that react to adjacent injury by causing vasodilation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.