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Proof

proof n

[alteration of Middle English preove, from Old French preuve, from Late Latin proba, from Latin probare to prove]
1 : the effect of evidence sufficient to persuade a reasonable person that a particular fact exists see also evidence
2 : the establishment or persuasion by evidence that a particular fact exists see also burden of proof
3 : something (as evidence) that proves or tends to prove the existence of a particular fact see also clear and convincing, preponderance of the evidence, reasonable doubt, standard of proof compare allegation, argument
4 : probate



Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.