Look up: retroactive

1. 
   retroactive
   [adj] - (psychology) descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   retroactive
   a delayed wage payment for work done previously at a lower rate Category: Statistics • the effect of a new tax law on transactions or events which have already taken place,generally seen as unfair in cases when it is disadvantageous to the taxpayer,but may be allowed for,exceptionally,if it proves to be advantageous to the taxpayer,or it is enacted to correct a technical defect in exis...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   Retroactive
   Re`tro·act'ive adjective [ Confer French rétroactif .] Fitted or designed to retroact; operating by returned action; affecting what is past; retrospective. Beddoes. Retroactive law or statute (Law) , one which operates to make criminal or punishable, or in any way expressly to affect, acts done prior to the passing of the law.
   Found on http://www.encyclo.co.uk/webster/R/69
   
   
4. 
   retroactive
   adjective descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
5. 
   Retroactive
   `Retroactive` means something happening after the fact. It may refer to: * `Retroactive legislation` or ``Ex post facto law`` * In fiction, `Retroactive continuity` or ``Retcon`` * In Interference theory, `Retroactive interference` * `Retroactive clairvoyance` or ``postdiction`` * In music ** `Retroactive Abortion`, an album by `Venomous Concept` ** `Retro Active`, an album by Def Leppard
   Found on http://en.wikipedia.org/wiki/Retroactive
   
   
6. 
   Retroactive
   • (a.) Fitted or designed to retroact; operating by returned action; affecting what is past; retrospective.
   Found on http://thinkexist.com/dictionary/meaning