[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/allergen/)

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# allergen

noun (an allergen, allergens)

«allergen» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

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://mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/#m1)

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

## On Mova

- [Trees and pragmatics of «allergen» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/allergen/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«allergen» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/allergen.html) on Mova free.