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allergen Syllabification: al·ler·gen
Pronunciation: /ˈalərj(ə)n/

Definition of allergen in English:


A substance that causes an allergic reaction.
Example sentences
  • Future exposure to the same allergens will cause the reaction to happen again.
  • The next time you're exposed to the allergen, your immune system launches an allergic reaction.
  • Wherever possible, the most effective way of treating allergies is to avoid all contact with the allergen causing the reaction.


Pronunciation: /ˌalərˈjenik/
Example sentences
  • We also asked the subjects about their activities outside the workplace - particularly any activity that might involve contact with irritants or allergenic agents.
  • Roasting peanuts may enhance their allergenic properties.
  • Many people choose to avoid milk because it contains saturated fat (if whole milk), cholesterol, allergenic proteins, lactose and frequent traces of contamination.
Pronunciation: /ˌalərjəˈnisitē/
Example sentences
  • Many questions concerning toxicity and allergenicity have been raised about corn contaminated with the spores of this fungus.
  • He faxed his two-page assessment to the Ministry of Agriculture warning that tests into nutritional performance, toxicology or allergenicity were insufficient and inadequate.
  • They were recognized for their development of an animal model to predict the allergenicity of genetically modified food.


Early 20th century: blend of allergy and -gen.

Definition of allergen in:
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