1. atopy

noun. an allergic reaction that becomes apparent in a sensitized person only minutes after contact.


  • allergic reaction
  • atopic allergy
  • type I allergic reaction
  • allergy


  • ἀτοπία (Ancient Greek (to 1453))
  • ἄτοπος (Ancient Greek (to 1453))

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Sentences with atopy

1. Noun, singular or mass
Welsh terriers with atopy might chew on their paws, exhibit head shaking and ear scratching and rub their noses along the ground to relieve the itch.

2. Verb, base form
Jack Russells are one of many breeds subject to atopy, or hair loss due to environmental allergies.