anaphylactic shock

noun

: an often severe and sometimes fatal systemic reaction in a susceptible individual upon exposure to a specific antigen (such as wasp venom or penicillin) after previous sensitization that is characterized especially by respiratory symptoms, fainting, itching, and hives

Examples of anaphylactic shock in a Sentence

Recent Examples on the Web
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Ivy spoils the kids with sweets (even though raspberries send her into anaphylactic shock), while Theo is more of a taskmaster, treating them like boot-camp recruits. Peter Debruge, Variety, 26 Aug. 2025 Letícia Paul, who had recently earned her law degree and was pursuing postgraduate studies in real estate and business law, went into anaphylactic shock moments after receiving an iodinated contrast dye, Jam Press reported. Khloe Quill, FOXNews.com, 25 Aug. 2025 Among them is Kimura, who was diagnosed with food allergies at 14 months old when he was rushed to the hospital in anaphylactic shock after eating a peanut off the floor. Jason Ma, Fortune, 23 Aug. 2025 Leticia Paul went into anaphylactic shock during the scan, which used a special contrast agent, at the Alto Vale Regional Hospital in Rio do Sul, Brazil, on Wednesday, Aug. 20, according to local outlets G1, Agencia Globo and Oeste SC Notícias. Kimberlee Speakman, People.com, 23 Aug. 2025 See All Example Sentences for anaphylactic shock

Word History

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of anaphylactic shock was in 1909

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Cite this Entry

“Anaphylactic shock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anaphylactic%20shock. Accessed 6 Sep. 2025.

Medical Definition

anaphylactic shock

noun
: an often severe and sometimes fatal systemic reaction in a susceptible individual upon a second exposure to a specific antigen (as wasp venom or penicillin) after previous sensitization that is characterized especially by respiratory symptoms, fainting, itching, and hives

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