anaphylaxis

[ an-uh-fuh-lak-sis ]

noun

, Pathology.

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

anaphylaxis

/ ˌænəfɪˈlæksɪs /

noun

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

anaphylaxis

/ ăn′ə-fə-lăk′sĭs /

1. See anaphylactic shock

Derived Forms

• ˌanaphyˈlactically, adverb
• ˌanaphyˈlactic, adjective

Other Words From

• an·a·phy·lac·tic [an-, uh, -f, uh, -, lak, -tik], adjective
• ana·phy·lacti·cal·ly adverb
• anti·ana·phy·lactic adjective noun
• pseudo·ana·phy·lactic adjective

Word History and Origins

Origin of anaphylaxis¹

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

Word History and Origins

Origin of anaphylaxis¹

C20: from ana- + ( pro ) phylaxis

Example Sentences

During randomized trials, no volunteers had severe allergic reactions, although people with a history of anaphylaxis were excluded from the trials.

From Washington Post

Seven of the people in the report had experienced anaphylaxis in the past.

From Science News

Polyethylene glycol has been previously linked to a handful of anaphylaxis cases.

From 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.

From Washington Post

Two cases of anaphylaxis occurred last week in the United Kingdom, involving health-care workers with a history of severe allergic reactions.

From Washington Post

Recent workers with pollens come near the truth in describing hay fever as an anaphylaxis.

From Project Gutenberg

The inherited form of hay fever is explained by the well-known transmission of anaphylaxis to the offspring.

From Project Gutenberg

The anaphylaxis theory halts a little at this point and is not exactly clear about the mechanism of that first poisoning.

From Project Gutenberg

He is in a state of exquisite anaphylaxis and a dose of pollen injected into his blood may kill him in twenty minutes.

From Project Gutenberg

What if gout should prove to be a sensitization or anaphylaxis to uric acid that does not exist in the non-gouty?

From Project Gutenberg