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

 

trivialization

 noun
(British English also -isation)noun
BrE BrE//ˌtrɪviəlaɪˈzeɪʃn//
 
; NAmE NAmE//ˌtrɪviələˈzeɪʃn//
 
[uncountable](usually disapproving)
 
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the act of making something seem less important, serious, difficult, etc. than it really is the trivialization of serious issues