Definition of Allergy (pathology, immunology) A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma. | (pathology) Any condition of hypersensitivity to a substance. | Altered susceptibility to a first treatment as exhibited in reaction to a subsequent one.
How to use Allergy in Sentences?
- 1. Attempts by Kins to eat normal food result in violent nausea, and most have an equally-violent allergy to strong spices. 🔊