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atopy

[at-uh-pee]
noun
  1. an allergy, involving an inherited immunoglobulin of the IgE type, that predisposes a person to certain allergic responses, as atopic dermatitis.

Origin of atopy

1920–25; < Greek atopía extraordinariness, equivalent to átop(os) out of place, unusual (see a-6, topo-) + -ia -y3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for atopy

atopy

noun
  1. immunol a hereditary tendency to be hypersensitive to certain allergens
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for atopy
n.

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).

Online Etymology Dictionary, © 2010 Douglas Harper
atopy in Medicine

atopy

[ăt′ə-pē]
n.
  1. 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.atopic allergy
Related formsa•top′ic (ā-tŏp′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.