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# allergen

«allergen» in Mova's school dictionary: **a substance that causes an allergic reaction in some…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (an allergen, allergens)

### meaning for a pupil

An allergen is a substance that causes an allergic reaction in some people, such as pollen, peanuts, dust mites, pet fur or bee stings. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#m1)

### sense in the lessons

In science, health and safety lessons it explains allergies, food labels and why some schools are nut-free. Phrases: common allergen, food allergen, allergen-free.

### examples

- Peanuts are a common allergen. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x1)
- Food labels show allergens in bold. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x2)
- Pollen is the allergen that causes hay fever. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x3)
- The school kitchen keeps a list of allergens. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x4)
- Cat fur is an allergen for my cousin. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x5)
- An allergen can cause sneezing, rash or swelling. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#x6)

### note

Countable. Related: allergy, allergic. Safety: a severe reaction (anaphylaxis) is an emergency — use the adrenaline pen and call for help. Allergen is said AL-er-jen.

### Trees and pragmatics

[Every meaning and example of «allergen» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/), each sentence with its dependency tree and frames.