anaphylaxis

[an-uh-fuh-lak-sis]

noun Pathology.

exaggerated allergic reaction to a foreign protein resulting from previous exposure to it.

Origin of anaphylaxis

First recorded in 1905–10; ana- + (pro)phylaxis

Related formsan·a·phy·lac·tic

[an-uh-fuh-lak-tik] /ˌæn ə fəˈlæk tɪk/, adjectivean·a·phy·lac·ti·cal·ly, adverban·ti·an·a·phy·lac·tic, adjective, nounpseu·do·an·a·phy·lac·tic, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anaphylaxis

Historical Examples of anaphylaxis

Foreign protein sensitization or anaphylaxis was the basis of Dr. Rutledge's coup.
The Sword and the Atopen
Taylor H. Greenfield
The important bearing of anaphylaxis on clinical practice is obvious.
The London Mercury, Vol. I, Nos. 1-6, November 1919 to April 1920
Various
On the basis of these facts it is seen that anaphylaxis is simply another variety of immunity.
The Fundamentals of Bacteriology
Charles Bradfield Morrey
He has added an excellent chapter on "Recent Work on Anaphylaxis."
The London Mercury, Vol. I, Nos. 1-6, November 1919 to April 1920
Various
Recent workers with pollens come near the truth in describing hay fever as an anaphylaxis.
The Treatment of Hay Fever
George Frederick Laidlaw

British Dictionary definitions for anaphylaxis

anaphylaxis

noun

extreme sensitivity to an injected antigen, esp a protein, following a previous injection

Derived Formsanaphylactic or anaphylactoid, adjectiveanaphylactically, adverb

Word Origin for anaphylaxis

C20: from ana- + (pro) phylaxis

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for anaphylaxis

see anaphylactic.

Medicine definitions for anaphylaxis