atopy
noun
at·o·py ˈa-tə-pē 
: a genetic disposition to develop an allergic reaction (such as allergic rhinitis or asthma) and produce elevated levels of IgE upon exposure to an environmental antigen and especially one inhaled or ingested
atopic
(ˌ)ā-ˈtä-pik
adjective -ˈtō-
Word History
Etymology
Greek atopia uncommonness, from atopos out of the way, uncommon, from a- + topos place
First Known Use
1923, in the meaning defined above
Medical Definition
atopy
noun
at·o·py ˈat-ə-pē
plural atopies
: a genetic disposition to develop an allergic reaction (as allergic rhinitis, asthma, or atopic dermatitis) and produce elevated levels of IgE upon exposure to an environmental antigen and especially one inhaled or ingested