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atopic

[ey-top-ik, uh-top-]
adjective
  1. of or relating to atopy.
  2. ectopic.
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Origin of atopic

First recorded in 1920–25; atop(y) + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for atopic

atopic

adjective
  1. immunol of or relating to hereditary hypersensitivity to certain allergens
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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 atopic

adj.

1923, from atopia (see atopy) + -ic.

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Online Etymology Dictionary, © 2010 Douglas Harper