[ nō′sĭ-fĕnsər ]


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.


Fend Off Sciolism With This Word Of The Day Quiz
Are you the Cinderella of this week’s quiz? Test your memory on the words and definitions from March 23–29.
Question 1 of 7
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.