ana·​phy·​lac·​tic | \ˌa-nə-fə-ˈlak-tik \

Definition of anaphylactic 

: of, relating to, affected by, or causing anaphylaxis or anaphylactic shock

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Other Words from anaphylactic

anaphylactically \ -​ti-​k(ə-​)lē \ adverb
anaphylactoid \ -​ˈlak-​ˌtȯid \ adjective

Examples of anaphylactic in a Sentence

Recent Examples on the Web

That did not happen for the Good Samaritan patient, who had suffered anaphylactic reactions to a group of painkillers that includes Advil, Motrin, and Aleve. Liz Kowalczyk,, "Brockton hospital staff overlooked warning about a deadly allergy. ‘Alert fatigue’ may be to blame," 6 June 2018 The suit says the boy ate and exhibited symptoms consistent with anaphylactic allergic reaction. Mary Mooney,, "Suit: Oregon caterer's meal caused child's allergic reaction," 23 May 2018 The reported prevalence of peanut and tree nut allergies in U.S. kids tripled between 1997 and 2008 and hospitalizations for anaphylactic reactions climbed steadily. Andy Marso, kansascity, "Peanut allergy? Children's Mercy treatment working and could soon be open to all kids | The Kansas City Star," 28 Mar. 2018 But because of the mislabeling, users are at risk of allergic, anaphylactic, or other adverse reactions. Lindsey Murray, Good Housekeeping, "ALERT: Bayer Recalls Alka-Seltzer Plus Cold Medicine," 19 Mar. 2018 Allergic-like reactions and severe life-threatening anaphylactic reactions are uncommon, but can happen in less than 1 percent of cases, according to the ACR. Korin Miller, SELF, "Here’s What to Expect Before, During, and After an MRI," 15 Mar. 2018 The agency estimates that one in 76,000 will have an anaphylactic reaction, one in 125,000 will experience a severe nervous system reaction, and one in 250,000 will suffer a life-threatening illness with organ failure. Megan Molteni, WIRED, "When WhatsApp's Fake News Problem Threatens Public Health," 9 Mar. 2018 My tongue begins to tingle, the first sign of an anaphylactic reaction. Michele Filgate, Longreads, "What My Mother and I Don’t Talk About," 10 Oct. 2017 Another occurred in 1984 in Alabama, when former state senator Finis St. John III died from anaphylactic shock after a fire ant bite, according to The Birmingham News archives. Dennis Pillion |,, "Fire ants are hard to control, even with decapitating flies on the job," 20 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anaphylactic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of anaphylactic

1905, in the meaning defined above

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The first known use of anaphylactic was in 1905

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More Definitions for anaphylactic


ana·​phy·​lac·​tic | \ˌan-ə-fə-ˈlak-tik \

Medical Definition of anaphylactic 

: of, relating to, affected by, or causing anaphylaxis or anaphylactic shock

Other Words from anaphylactic

anaphylactically \ -​ti-​k(ə-​)lē \ adverb

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to clear from alleged fault or guilt

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