anaphylactic

adjective

ana·​phy·​lac·​tic ˌa-nə-fə-ˈlak-tik How to pronounce anaphylactic (audio)
: of, relating to, affected by, or causing anaphylaxis or anaphylactic shock
anaphylactically adverb
anaphylactoid adjective

Examples of anaphylactic in a Sentence

Recent Examples on the Web
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In severe cases, people with food allergies may go into anaphylaxis—and peanuts are the most common cause of anaphylactic allergic reactions. Adeola Adeosun, MSNBC Newsweek, 15 June 2025 How to treat anaphylactic reactions Anaphylactic reactions most commonly occur in response to foods, insect stings, medications and latex, according to the American Academy of Allergy, Asthma and Immunology. Adrianna Rodriguez, USA Today, 12 June 2025 An amniotic fluid embolism, or anaphylactic syndrome of pregnancy, is a rare, life-threatening complication that can occur after during delivery or shortly after. Sarah Lynch Baldwin, CBS News, 3 Apr. 2025 Anaphylactic Reaction An anaphylactic response to acetaminophen is rare but possible.9 Anaphylaxis is a severe allergic reaction to a substance. Nancy Lebrun, Verywell Health, 21 Mar. 2025 See All Example Sentences for anaphylactic

Word History

First Known Use

1905, in the meaning defined above

Time Traveler
The first known use of anaphylactic was in 1905

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Cite this Entry

“Anaphylactic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anaphylactic. Accessed 30 Jun. 2025.

Medical Definition

anaphylactic

adjective
ana·​phy·​lac·​tic ˌan-ə-fə-ˈlak-tik How to pronounce anaphylactic (audio)
: of, relating to, affected by, or causing anaphylaxis or anaphylactic shock
anaphylactically adverb
Last Updated: - Updated example sentences
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