Definition of aporia noun from the Oxford Advanced Learner's Dictionary

 

aporia

 noun
noun
BrE BrE//əˈpɔːriə//
 
; NAmE NAmE//əˈpɔːriə//
 
(specialist)
 
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a situation in which two or more parts of a theory or argument do not agree, meaning that the theory or argument cannot be true Word Origin mid 16th cent.: via late Latin from Greek, from aporos ‘impassable’, from a- ‘without’ + poros ‘passage’.
See the Oxford Advanced American Dictionary entry: aporia