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retroactivity
Variant of retroactive
adjective
- having application to or effect on things done prior to its enactment: a retroactive law
- going into effect as of a specified date in the past: a retroactive increase
Related Forms:
- retroactively adverb
- retroactivity noun
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.