- an action contrary or reciprocal to a preceding action
- a retrospective action, esp a law affecting events prior to its enactment
| 单词 | retroaction |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 ret•ro•ac•tion (re′trō ak′shən),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: ˌretroˈaction /ˌrɛtrəʊˈækʃən/ n
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