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aphylaxis

[ā′fə-lăk′sĭs, ăf′ə-]

n.

Lack of protection against disease.nonimmunity

Related formsa′phy•lac′tic (-lăk′tĭk) adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.