Definition of allergen
: a substance (such as pollen) that induces allergy
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Examples of allergen in a Sentence
common allergens, such as pollen
Recent Examples of allergen from the Web
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Newell said of the pillows, which are allergen-free (they are made from a microfiber-polyester alternative to down).
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Despite your best efforts, your nose and sinuses are still going to be exposed to allergens regularly.
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These gluten-free, allergen-free mints have no high fructose corn syrup, artificial coloring, or sweeteners.
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Peanut protein contains 11 allergens, Ara h 1 through Ara h 11, that help to activate an inappropriate immune response.
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Animals, often goats, are injected with the substance of interest, such as food allergens like soy or gluten, Brown explained.
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When a cat licks its fur to clean itself, the Fel d 1-containing saliva dries and becomes an airborne allergen.
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And as if that weren't enough, there are also perennial allergens that persist year-round, such as dust, pet dander, and some types of mold.
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Ask parents for ideas of allergen-free snacks that their kids enjoy.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'allergen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of allergen
International Scientific Vocabulary allergy + -gen
NEW! Time Traveler
First Known Use: circa 1907
in the meaning defined above
See Words from the same yearALLERGEN Defined for English Language Learners
Definition of allergen for English Language Learners
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medical : a substance that causes an allergy
ALLERGEN Defined for Kids
Definition of allergen for Students
: a substance that causes an allergic reaction
Medical Dictionary
Learn More about allergen
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Spanish Central: Translation of allergen Nglish: Translation of allergen for Spanish speakers Britannica English: Translation of allergen for Arabic speakers Britannica.com: Encyclopedia article about allergen
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