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

 

retrospection

 noun
noun
BrE BrE//ˌretrəˈspekʃn//
 
; NAmE NAmE//ˌretrəˈspekʃn//
 
[uncountable](formal)
 
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thinking about past events or situations Word Origin mid 17th cent.: probably from retrospect (used as a verb).
See the Oxford Advanced American Dictionary entry: retrospection