allergen

noun

al·​ler·​gen ˈa-lər-jən How to pronounce allergen (audio)
: a substance (such as pollen) that induces allergy
allergenic adjective
allergenicity noun

Examples of allergen in a Sentence

common allergens, such as pollen
Recent Examples on the Web The rain can wash away pollutants and allergens in the air, especially in many large cities that are overly populated and polluted. Alyssa Hui, Verywell Health, 19 Apr. 2024 With a 360-degree air intake that covers 215 square feet (the perfect size for a bedroom or office), the air purifier can capture up to 99.97 percent of particles as small as 0.01 microns, like dust, pet dander, and other allergens, from the air using the H13 true HEPA filter. Leonora Epstein, Peoplemag, 10 Apr. 2024 Those don’t have almonds, so almonds aren’t listed among the allergens. David J. Neal, Miami Herald, 3 Apr. 2024 Antihistamines Antihistamines reduce the itchiness and inflammation produced by histamine, a chemical your immune cells release when triggered by an allergen. Nina Agrawal, San Diego Union-Tribune, 2 Apr. 2024 Asthma, allergens, and irritants are common triggers of a cough that's not caused by illness. Claire Gillespie, Health, 17 Mar. 2024 Walmart cashews recalled due to allergy risk Walmart cashews recalled due to allergy risk 00:25 Cashews sold by Walmart in 30 states and on their website have been recalled due to unknown milk and coconut allergens, according to a company statement posted by the U.S. Food and Drug Administration. Alex Sundby, Cara Tabachnick, CBS News, 14 Mar. 2024 Their products are third-party tested for purity and potency, including nutritional content, pesticides and herbicides, heavy metals, allergens, microbes, and other potential contaminants. Casey Seiden, Parents, 22 Mar. 2024 Things To Consider While they aren’t certified by one of our preferred third-party organizations, Pure Encapsulation’s ingredients are tested for identity, potency, contaminants, metals, and allergens. Lainey Younkin, Ms, Rd, Verywell Health, 22 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'allergen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

borrowed from German Allergen,, blend of allerg- (in Allergie allergy) and -gen (in Antigen antigen)

Note: See note at allergy.

First Known Use

circa 1907, in the meaning defined above

Time Traveler
The first known use of allergen was circa 1907

Dictionary Entries Near allergen

Cite this Entry

“Allergen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/allergen. Accessed 24 Apr. 2024.

Kids Definition

allergen

noun
al·​ler·​gen ˈal-ər-jən How to pronounce allergen (audio)
: a substance (as pollen) that causes allergy
allergenic adjective

Medical Definition

allergen

noun
al·​ler·​gen ˈal-ər-jən How to pronounce allergen (audio)
: a substance that induces allergy
inhaled allergens
a suspected food allergen

More from Merriam-Webster on allergen

Last Updated: - Updated example sentences
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