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2 definitions found
 for Proof sheet
From The Collaborative International Dictionary of English v.0.48 :

  Proof \Proof\, n. [OF. prove, proeve, F. preuve, fr. L. proba,
     fr. probare to prove. See Prove.]
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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
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              For whatsoever mother wit or art
              Could work, he put in proof.          --Spenser.
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              You shall have many proofs to show your skill.
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              Formerly, a very rude mode of ascertaining the
              strength of spirits was practiced, called the proof.
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     2. 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.
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              I'll have some proof.                 --Shak.
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              It is no proof of a man's understanding to be able
              to confirm whatever he pleases.       --Emerson.
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     Note: Properly speaking, proof is the effect or result of
           evidence, evidence is the medium of proof. Cf.
           Demonstration, 1.
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     3. 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.
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     4. Firmness of mind; stability not to be shaken.
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     5. (Print.) A trial impression, as from type, taken for
        correction or examination; -- called also proof sheet.
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     6. (Math.) A process for testing the accuracy of an operation
        performed. Cf. Prove, v. t., 5.
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     7. Armor of excellent or tried quality, and deemed
        impenetrable; properly, armor of proof. [Obs.] --Shak.
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     Artist's proof, a very early proof impression of an
        engraving, or the like; -- often distinguished by the
        artist's signature.
     Proof reader, one who reads, and marks correction in,
        proofs. See def. 5, above.
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     Syn: Testimony; evidence; reason; argument; trial;
          demonstration. See Testimony.
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From The Collaborative International Dictionary of English v.0.48 :

  Proof \Proof\, a.
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     1. Used in proving or testing; as, a proof load, or proof
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     2. Firm or successful in resisting; as, proof against harm;
        waterproof; bombproof.
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              I . . . have found thee
              Proof against all temptation.         --Milton.
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              This was a good, stout proof article of faith.
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     3. Being of a certain standard as to strength; -- said of
        alcoholic liquors.
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     Proof charge (Firearms), a charge of powder and ball,
        greater than the service charge, fired in an arm, as a gun
        or cannon, to test its strength.
     Proof impression. See under Impression.
     Proof load (Engin.), the greatest load than can be applied
        to a piece, as a beam, column, etc., without straining the
        piece beyond the elastic limit.
     Proof sheet. See Proof, n., 5.
     Proof spirit (Chem.), a strong distilled liquor, or mixture
        of alcohol and water, containing not less than a standard
        amount of alcohol. In the United States "proof spirit is
        defined by law to be that mixture of alcohol and water
        which contains one half of its volume of alcohol, the
        alcohol when at a temperature of 60[deg] Fahrenheit being
        of specific gravity 0.7939 referred to water at its
        maximum density as unity. Proof spirit has at 60[deg]
        Fahrenheit a specific gravity of 0.93353, 100 parts by
        volume of the same consisting of 50 parts of absolute
        alcohol and 53.71 parts of water," the apparent excess of
        water being due to contraction of the liquids on mixture.
        In England proof spirit is defined by Act 58, George III.,
        to be such as shall at a temperature of 51[deg] Fahrenheit
        weigh exactly the 12/13 part of an equal measure of
        distilled water. This contains 49.3 per cent by weight, or
        57.09 by volume, of alcohol. Stronger spirits, as those of
        about 60, 70, and 80 per cent of alcohol, are sometimes
        called second, third, and fourth proof spirits
     Proof staff, a straight-edge used by millers to test the
        flatness of a stone.
     Proof stick (Sugar Manuf.), a rod in the side of a vacuum
        pan, for testing the consistency of the sirup.
     Proof text, a passage of Scripture used to prove a
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