a priori Hear it!

a priori definition - legal

n

Latin

From what is before. Deductive reasoning or the ascertaining of truth by proceeding from an assumption to its logical conclusion rather than by actual experience or observation. For example, one who walks by a store when its alarm is sounding and sees that its window is broken can deduce that a burglary has occurred without having watched the burglars commit the actual crime.

Webster's New World Law Dictionary Copyright © 2006 by Wiley Publishing, Inc., Hoboken, New Jersey.
Used by arrangement with John Wiley & Sons, Inc.

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