allergy

noun — 3 senses

allergy

noun

UK [ˈæl.ə.dʒi] · US [ˈæl.ɚ.d͡ʒi]

Etymology Borrowed from German Allergie. Coined by Austrian pediatrician Clemens von Pirquet in 1906 from Ancient Greek ἄλλος (állos, “other”) + ἔργον (érgon, “work, activity”), on the model of Energie.

1

Immunology, Medicine, Sciences Broadly 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.

  • My dad can't live with pets because of an allergy.
2

Immunology, Medicine, Sciences Broadly Specifically, hypersensitivity of class I in the modern classification thereof: the immunoglobulin E–mediated type.

3

Figuratively, Informal An antipathy, as toward a person or activity.

  • He has an allergy to reality TV.
Synonyms
type 1 hypersensitivity, intolerance
Derived terms
27 termsaeroallergy, allergen, allergic, allergin, allergist, allergoid, allergologist, allergology, allergylike, allergy salute, alpha-gal allergy, antiallergy, autoallergy, cold allergy, food allergy, lone-star-tick meat allergy, mammalian meat allergy, nonallergy, oral allergy syndrome, photoallergy, polyallergy, pseudoallergy, red meat allergy, tick-induced meat allergy, tick meat allergy, total allergy syndrome, water allergy
Hypernyms
hypersensitivity

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.