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

 

monomania

 noun
noun
BrE BrE//ˌmɒnəˈmeɪniə//
 
; NAmE NAmE//ˌmɑːnəˈmeɪniə//
 
[uncountable](psychology) Mental and emotional problems
 
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too much interest in or enthusiasm for just one thing so that it is not healthy See related entries: Mental and emotional problems
See the Oxford Advanced American Dictionary entry: monomania