Definition of Allergen:

  1. Substance that causes allergic reactions in individuals who are hypersensitive to it. Also called antigen, because the immune system regards it as foreign or potentially dangerous and produces antibodies to counter it.

  2. A substance that causes an allergic reaction.

Synonyms of Allergen

Rh factor, Agglutinin, Allergic disorder, Allergy, Anaphylactin, Antiantibody, Antibody, Antigen, Antiserum, Antitoxic serum, Antitoxin, Antivenin, Asthma, Conjunctivitis, Cosmetic dermatitis, Eczema, Hay fever, Hives, Incomplete antibody, Interferon, Pollinosis, Precipitin, Rose cold, Serum, Urticaria

How to use Allergen in a sentence?

  1. Future exposure to the same allergens will cause the reaction to happen again.

Meaning of Allergen & Allergen Definition