noun Pathology.
- exaggerated allergic reaction to a foreign protein resulting from previous exposure to it.
noun
- extreme sensitivity to an injected antigen, esp a protein, following a previous injection
1905, with -ic + medical Latin noun anaphylaxis “exaggerated susceptibility,” from French anaphylaxie (1902), from Greek ana- (see ana-) + phylaxis “watching, guarding” (cf. prophylactic). Anaphylactic shock is attested by 1916.
see anaphylactic.
n. pl. an•a•phy•lax•es (-lăk′sēz)
- Hypersensitivity induced by preliminary exposure to a substance and usually producing a contraction of smooth muscle and a dilation of blood vessels.
- anaphylactic shock
- See anaphylactic shock.