anaphylaxis

[ an-uh-fuh-lak-sis ]

/ ˌæn ə fəˈlæk sɪs /

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noun Pathology.

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

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Origin of anaphylaxis

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

OTHER WORDS FROM anaphylaxis

an·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

Words nearby anaphylaxis

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for anaphylaxis

During randomized trials, no volunteers had severe allergic reactions, although people with a history of anaphylaxis were excluded from the trials.
Allergic reactions to the coronavirus vaccine are rare and outweighed by the benefit of protection, CDC finds|William Wan, Joel Achenbach|January 6, 2021|Washington Post
Seven of the people in the report had experienced anaphylaxis in the past.
Severe allergic reactions to COVID-19 vaccines are extremely rare, CDC says|Aimee Cunningham|January 6, 2021|Science News
Polyethylene glycol has been previously linked to a handful of anaphylaxis cases.
Everything to know about allergic reactions to COVID vaccines|Karen Yuan|December 31, 2020|Fortune
During the meeting, he and other Moderna executives explained that they saw no cases of anaphylaxis in their 30,000-person coronavirus vaccine trials.
FDA vows to move 'rapidly’ to authorize second coronavirus vaccine|Laurie McGinley, Carolyn Y. Johnson|December 18, 2020|Washington Post

Two cases of anaphylaxis occurred last week in the United Kingdom, involving health-care workers with a history of severe allergic reactions.
FDA investigating rare allergic reactions to Pfizer coronavirus vaccine, but says rollout will continue|Carolyn Y. Johnson, Joel Achenbach|December 18, 2020|Washington Post
Recent workers with pollens come near the truth in describing hay fever as an anaphylaxis.
The Treatment of Hay Fever|George Frederick Laidlaw
The inherited form of hay fever is explained by the well-known transmission of anaphylaxis to the offspring.
The Treatment of Hay Fever|George Frederick Laidlaw
The anaphylaxis theory halts a little at this point and is not exactly clear about the mechanism of that first poisoning.
The Treatment of Hay Fever|George Frederick Laidlaw
He is in a state of exquisite anaphylaxis and a dose of pollen injected into his blood may kill him in twenty minutes.
The Treatment of Hay Fever|George Frederick Laidlaw
What if gout should prove to be a sensitization or anaphylaxis to uric acid that does not exist in the non-gouty?
The Treatment of Hay Fever|George Frederick Laidlaw

British Dictionary definitions for anaphylaxis

anaphylaxis

/ (ˌænəfɪˈlæksɪs) /

noun

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

Derived forms of anaphylaxis

anaphylactic 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

Medical definitions for anaphylaxis

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

Other words from anaphylaxis

an′a•phy•lac′tic (-lăk′tĭk) adj.

Scientific definitions for anaphylaxis

anaphylaxis

[ ăn′ə-fə-lăk′sĭs ]

See anaphylactic shock.

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anaphylaxis

noun Pathology.

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Origin of anaphylaxis

OTHER WORDS FROM anaphylaxis

Words nearby anaphylaxis

Example sentences from the Web for anaphylaxis

British Dictionary definitions for anaphylaxis

noun

Derived forms of anaphylaxis

Word Origin for anaphylaxis

Medical definitions for anaphylaxis

n. pl. an•a•phy•lax•es (-lăk′sēz)

Other words from anaphylaxis

Scientific definitions for anaphylaxis