an allergy, involving an inherited immunoglobulin of the IgE type, that predisposes a person to certain allergic responses, as dermatitis.
(immunol) a hereditary tendency to be hypersensitive to certain allergens

1923, coined by Edward D. Perry, professor of Greek at Columbia University, at the request of medical men, from Greek atopia “unusualness, strangeness, a being out of the way,” from atopos “out of place, strange, odd, eccentric,” from a-, privative prefix (see a- (3)), + topos “place” (see topos).

atopy at·o·py (āt’ə-pē)
A hereditary disorder marked by the tendency to develop immediate allergic reactions to substances such as pollen, food, dander, and insect venoms and manifested by hay fever, asthma, or similar allergic conditions. Also called atopic allergy.
a·top’ic (ā-tŏp’ĭk) adj.


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