retroaction

[ re-troh-ak-shuh n ]
/ ˌrɛ troʊˈæk ʃən /

noun

action that is opposed or contrary to the preceding action.

Origin of retroaction

First recorded in 1560–70; retro- + action
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for retroaction

British Dictionary definitions for retroaction

retroaction

/ (ˌrɛtrəʊˈækʃən) /

noun

an action contrary or reciprocal to a preceding action
a retrospective action, esp a law affecting events prior to its enactment
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012