retroactive

形容词 adj.
中文释义
英 /ˌɹɛt.ɹəʊˈæk.tɪv/    美 /ˌɹɛ.tɹoʊˈæk.tɪv/

英文释义

形容词 adj.
  1. Extending in scope, effect, application or influence to a prior time or to prior conditions not-comparable
    — Rather, he hoped there was some legal trickeration he could deploy to get a retroactive water right filed and end-run the opposition.

词源

First attested in 1610. From French rétroactif, equivalent to retro- + active.
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