retroaction

noun
ret·​ro·​ac·​tion | \ ˌre-trō-ˈak-shən How to pronounce retroaction (audio) \

Definition of retroaction

1 [retroactive] : retroactive operation (as of a law or tax)
2 [retro- + action] : a reciprocal action : reaction

First Known Use of retroaction

1728, in the meaning defined at sense 1

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The first known use of retroaction was in 1728

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Cite this Entry

“Retroaction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retroaction. Accessed 20 Jun. 2021.

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