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retroaction

 - 2 dictionary results

ret⋅ro⋅ac⋅tion

[re-troh-ak-shuhn]
–noun
action that is opposed or contrary to the preceding action.

Origin:
1560–70; retro- + action
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To retroaction
ret·ro·ac·tion   (rět'rō-āk'shən)   
n.  
  1. An action, as of a law, that influences or applies to a prior time.

  2. An opposing or reciprocal action; a reaction.

ret'ro·act' v.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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