anaphylaxis

[an-uh-fuh-lak-sis] /ˌæn ə fəˈlæk sɪs/
noun, Pathology
1.
exaggerated allergic reaction to a foreign protein resulting from previous exposure to it.
Origin
1905-10; ana- + (pro)phylaxis
Related forms
anaphylactic
[an-uh-fuh-lak-tik] /ˌæn ə fəˈlæk tɪk/ (Show IPA), adjective
anaphylactically, adverb
antianaphylactic, adjective, noun
pseudoanaphylactic, adjective
Examples from the web for anaphylaxis
  • anaphylaxis is a sudden and severe allergic reaction that occurs within minutes of exposure.
  • anaphylaxis is a severe, whole-body allergic reaction that is life threatening.
  • Food is the leading cause of anaphylaxis in children.
  • The diagnosis and management of anaphylaxis: an updated practice parameter.
British Dictionary definitions for anaphylaxis

anaphylaxis

/ˌænəfɪˈlæksɪs/
noun
1.
extreme sensitivity to an injected antigen, esp a protein, following a previous injection
Derived Forms
anaphylactic, anaphylactoid, adjective
anaphylactically, adverb
Word Origin
C20: from ana- + (pro)phylaxis
Word Origin and History for anaphylaxis
n.

see anaphylactic.

anaphylaxis in Medicine

anaphylaxis an·a·phy·lax·is (ān'ə-fə-lāk'sĭs)
n. pl. an·a·phy·lax·es (-lāk'sēz)

  1. Hypersensitivity induced by preliminary exposure to a substance and usually producing a contraction of smooth muscle and a dilation of blood vessels.

  2. See anaphylactic shock.

an'a·phy·lac'tic (-lāk'tĭk) adj.
anaphylaxis in Science
anaphylaxis
  (ān'ə-fə-lāk'sĭs)   
See anaphylactic shock.