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anaphylaxis

an·a·phy·lax·is [ ànnəfə láksiss ]

noun

Definition:

1. extreme sensitivity: extreme sensitivity to a substance such as a protein or drug

2. med
Same as anaphylactic shock

[Early 20th century. < modern Latin< Greek ana- "again" (because a substance is reintroduced) + -phylaxis "guarding, watching"]

an·a·phy·lac·toid [ ànnəfə lák tòyd ] adjective

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