anaphylaxis

[ an-uh-fuh-lak-sis ]

/ ˌæn ə fəˈlæk sɪs /

noun Pathology.

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

Nearby words

anaphylactogenesis, anaphylactoid, anaphylactoid purpura, anaphylactoid shock, anaphylatoxin, anaphylaxis, anaplasia, anaplasmosis, anaplastic, anaplastic cell, anaplasty

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 anaphylactic

The histone was so toxic that its anaphylactic properties could not be studied.
The Organism as a Whole|Jacques Loeb
The first case in the line of descent must start with a severe poisoning that lays the foundation of the anaphylactic inheritance.
The Treatment of Hay Fever|George Frederick Laidlaw
Now all these specific reactions, the precipitin reaction as well as the anaphylactic reaction, can be called forth by proteins.
The Organism as a Whole|Jacques Loeb
Idiosyncrasy to cow's milk which is observed sometimes in infants is an anaphylactic phenomenon.
Food Poisoning|Edwin Oakes Jordan

Among the reactions usually classed as anaphylactic are the occasional cases of sensitivity to particular food substances.
Food Poisoning|Edwin Oakes Jordan

British Dictionary definitions for anaphylactic

anaphylaxis

/ (ˌænəfɪˈlæksɪs) /

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

Medicine definitions for anaphylactic

anaphylaxis

[ ăn′ə-fə-lăk′sĭs ]

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

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

Science definitions for anaphylactic

anaphylaxis

[ ăn′ə-fə-lăk′sĭs ]

See anaphylactic shock.