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  1. Any effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.
For whatsoever mother wit or art Could work, he put in . -w:Spenser.
You shall have many proofs to show your skill. -w:Ford.
Formerly, a very rude mode of ascertaining the strength of spirits was practiced, called the . -w:Ure.
  1. That degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments that induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration.
I'll have some . -w:Shak.
It is no of a man's understanding to be able to confirm whatever he pleases. -w:Emerson.
:Note: Properly speaking, proof is the effect or result of evidence, evidence is the medium of proof. Cf. Demonstration, 1.
    • 1990 October 28, w:Paul Simon, Paul Simon, "Proof", w:The Rhythm of the Saints, The Rhythm of the Saints, Warner Bros.
    • : Faith, faith is an island in the setting sun / But , is the bottom line for everyone
      1. The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield to force; impenetrability of physical bodies.
      2. Firmness of mind; stability not to be shaken.
      3. (printing) A proof sheet; a trial impression, as from type, taken for correction or examination.
      4. (mathematics): A process for testing the accuracy of an operation performed. Cf. Prove, v. t., 5.
      5. (obsolete): Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.
      6. A measure of the alcohol content of liquor. Originally in Britain 100 was defined as 57,1% by volume (not used anymore). In the US 100 means that the alcohol content is 50% of the total volume of the liquid and thus absolute alcohol would be 200 .
  • Dutch: bewijs
  • French: preuve
  • German: Beweis
  • Italian: prova
  • Spanish: prueba
  1. (colloquial) To proofread.
  1. Used in proving or testing; as, a proof load, or proofcharge.
  2. Firm or successful in resisting; as, proof against harm; waterproof; bombproof.
I ... have found thee Proof against all temptation. -w:Milton.
This was a good, stout article of faith. -w:Burke.
  1. Being of a certain standard as to strength; -- said of alcoholic liquors.
    Etymology: From Latin probare, test

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