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English definition of “retrospective”

retrospective

adjective
 
 
/ˌretrəʊˈspektɪv/
If a law or decision is retrospective, it affects situations in the past as well as in the future.Relating to timeLegislation and law-making
retrospectively adverb
(Definition of retrospective adjective from the Cambridge Learners Dictionary © Cambridge University Press)
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