retroaction

noun ret·ro·ac·tion \ ˌre-trō-ˈak-shən \

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


Learn More about retroaction


Seen and Heard

What made you want to look up retroaction? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a blind with adjustable horizontal slats

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!