aphylaxis

[ā′fə-lăksĭs, ăf′ə-]

n.

Lack of protection against disease.nonimmunity

Related formsa′phy•lactic (-lăktĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.