ret·ro·ac·tion 
(rĕt′rō-ăkshən)
(rĕt′rō-ăkshən)n.
1. Application of a subsequent rule or condition to something that occurred at a previous time.
2. An opposing or reciprocal action; a reaction.
retro·act′ v.
| 单词 | retroaction |
| 释义 | ret·ro·ac·tion (rĕt′rō-ăkshən)n. 1. Application of a subsequent rule or condition to something that occurred at a previous time. 2. An opposing or reciprocal action; a reaction. retro·act′ v. |
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