Allergy
/ˈælərdʒi/
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Definition
(noun) 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; any condition of hypersensitivity to a substance.
Sentence Examples
I have an allergy to milk.
He has a drug allergy.
CEFR Practice Quiz
Peanut ____ is a serious medical condition that requires care.