English

Definition of atopic adjective from the Oxford Advanced Learner's Dictionary

 

atopic

 adjective
adjective
BrE BrE//ˈtɒpɪk//
 
; NAmE NAmE//ˈtɑːpɪk//
 
(medical)
 
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relating to a form of allergy where there is a reaction in a part of the body that does not have direct contact with the thing causing the allergy Word Origin early 20th cent.: from Greek atopia ‘unusualness’, from atopos ‘unusual’, from a- ‘without’ + topos ‘place’.
See the Oxford Advanced American Dictionary entry: atopic