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Definition of Anaphylaxis
1. Noun. Hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance. 
Specialized synonyms: Anaphylactic Shock
Generic synonyms: Hypersensitivity Reaction
Derivative terms: Anaphylactic
Definition of Anaphylaxis
1. Noun. Extreme sensitivity to a substance such as a foreign protein or drug. ¹
2. Noun. A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock. ¹
¹ Source: wiktionary.com
Definition of Anaphylaxis
1. [n -LAXES]
Medical Definition of Anaphylaxis
1. 



