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7 definitions found
 for proof
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.]
     [1913 Webster]
     1. Any effort, process, or operation designed to establish or
        discover a fact or truth; an act of testing; a test; a
        [1913 Webster]
              For whatsoever mother wit or art
              Could work, he put in proof.          --Spenser.
        [1913 Webster]
              You shall have many proofs to show your skill.
        [1913 Webster]
              Formerly, a very rude mode of ascertaining the
              strength of spirits was practiced, called the proof.
        [1913 Webster]
     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.
        [1913 Webster]
              I'll have some proof.                 --Shak.
        [1913 Webster]
              It is no proof of a man's understanding to be able
              to confirm whatever he pleases.       --Emerson.
        [1913 Webster]
     Note: Properly speaking, proof is the effect or result of
           evidence, evidence is the medium of proof. Cf.
           Demonstration, 1.
           [1913 Webster]
     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.
        [1913 Webster]
     4. Firmness of mind; stability not to be shaken.
        [1913 Webster]
     5. (Print.) A trial impression, as from type, taken for
        correction or examination; -- called also proof sheet.
        [1913 Webster]
     6. (Math.) A process for testing the accuracy of an operation
        performed. Cf. Prove, v. t., 5.
        [1913 Webster]
     7. Armor of excellent or tried quality, and deemed
        impenetrable; properly, armor of proof. [Obs.] --Shak.
        [1913 Webster]
     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.
        [1913 Webster]
     Syn: Testimony; evidence; reason; argument; trial;
          demonstration. See Testimony.
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Proof \Proof\, a.
     [1913 Webster]
     1. Used in proving or testing; as, a proof load, or proof
        [1913 Webster]
     2. Firm or successful in resisting; as, proof against harm;
        waterproof; bombproof.
        [1913 Webster]
              I . . . have found thee
              Proof against all temptation.         --Milton.
        [1913 Webster]
              This was a good, stout proof article of faith.
        [1913 Webster]
     3. Being of a certain standard as to strength; -- said of
        alcoholic liquors.
        [1913 Webster]
     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
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      adj 1: (used in combination or as a suffix) able to withstand;
             "temptation-proof"; "childproof locks"
      n 1: any factual evidence that helps to establish the truth of
           something; "if you have any proof for what you say, now is
           the time to produce it" [syn: proof, cogent evidence]
      2: a formal series of statements showing that if one thing is
         true something else necessarily follows from it
      3: a measure of alcoholic strength expressed as an integer twice
         the percentage of alcohol present (by volume)
      4: (printing) an impression made to check for errors [syn:
         proof, test copy, trial impression]
      5: a trial photographic print from a negative
      6: the act of validating; finding or testing the truth of
         something [syn: validation, proof, substantiation]
      v 1: make or take a proof of, such as a photographic negative,
           an etching, or typeset
      2: knead to reach proper lightness; "proof dough"
      3: read for errors; "I should proofread my manuscripts" [syn:
         proofread, proof]
      4: activate by mixing with water and sometimes sugar or milk;
         "proof yeast"
      5: make resistant (to harm); "proof the materials against
         shrinking in the dryer"

From Moby Thesaurus II by Grady Ward, 1.0 :

  278 Moby Thesaurus words for "proof":
     Christophany, Ditto copy, Photostat, Satanophany, Xerox,
     Xerox copy, absolute indication, account, acid test, acquaintance,
     affirmation, airtight, ammunition, angelophany, announcement,
     appearance, argument, assay, attestation, authentication, avatar,
     backing, backing up, ballproof, basis for belief, bearing out,
     blank determination, blue, blue book, blueprint, body of evidence,
     bolstering, bombproof, briefing, bring out, brouillon, bulletin,
     bulletproof, burden of proof, burglarproof, buttressing,
     certification, chain of evidence, circumstantiation, clue,
     cold-type proof, color proof, communication, communique,
     computer proof, conclusive evidence, confirmation, contact print,
     corroboration, corroboratory evidence, corrosionproof, criterion,
     crucial test, crucible, damning evidence, dampproof, data, datum,
     deduction, deductive reasoning, demonstration, determination,
     directory, disclosure, discourse, discourse of reason,
     discursive reason, dispatch, dissemination, docimasy, document,
     documentation, embodiment, engrave, enlargement, enlightenment,
     epiphany, essay, establishment, evidence, evincement, exhibit,
     expression, fact, facts, factual information, familiarization,
     feeling out, fire-resisting, fireproof, first draft, flameproof,
     foolproof, fortification, foundry proof, galley, galley proof, gen,
     general information, get out, ground, grounds, grounds for belief,
     guidebook, handout, hard information, hectograph, hectograph copy,
     hermetic, holeproof, impenetrable, impervious, impervious to,
     impregnable, impress, impression, imprint, incarnation,
     incidental information, incontrovertible evidence, indication,
     indisputable evidence, induction, inductive reasoning, info,
     information, instruction, insulate, intelligence, ironclad proof,
     issue, item of evidence, kiteflying, knowledge, leakproof, light,
     logical thought, manifestation, mark, material grounds,
     materialization, measure, mention, message, mimeograph,
     mimeograph copy, multigraph, muniments, mute witness, negative,
     noiseproof, notice, notification, offprint, onus, onus probandi,
     ordeal, overprint, page proof, philosophy, photocopy, photograph,
     photostatic copy, piece of evidence, plate proof, pneumatophany,
     positive, premises, presentation, press proof, print, probation,
     progressive proof, promotional material, proof against,
     proof before letter, proof sheet, protective, prove, proving,
     proving out, publication, publicity, publish, pull, pull a proof,
     punctureproof, put out, put to bed, put to press, ratification,
     ratiocination, rationalism, rationality, rationalization,
     rationalizing, reason, reason to believe, reasonableness,
     reasoning, reinforcement, reissue, release, relevant fact, report,
     reprint, repro proof, resistant, revelation, revise, rough draft,
     rough sketch, run, run off, rustproof, settlement, shatterproof,
     shellproof, sidelight, sign, slip, sophistry, sounding out,
     soundproof, specious reasoning, stamp, standard, stat, statement,
     stone proof, strengthening, strike, strong, substantiation,
     support, supporting evidence, sure sign, sweet reason, symptom,
     tempered, test, test case, testament, testimonial, testimony,
     the dope, the goods, the know, the scoop, theophany, tight, token,
     touchstone, tough, transmission, trial, trial impression, try,
     undergirding, unmistakable sign, validation, vandyke, verification,
     waterproof, watertight, weatherproof, wherefore, white book,
     white paper, why, whyfor, witness, word

From The Free On-line Dictionary of Computing (30 December 2018) :

     1.  A finite sequence of well-formed formulas, F1,
     F2, ... Fn, where each Fi either is an axiom, or follows by
     some rule of inference from some of the previous F's, and Fn
     is the statement being proved.
     See also proof theory.
     2. A left-associative natural language parser by Craig
     R. Latta .  Ported to Decstation
     3100, Sun-4.
     E-mail: .  Mailing list:
     proof-requestf@xcf.berkeley.edu (Subject: add me).

From Bouvier's Law Dictionary, Revised 6th Ed (1856) :

  PROOF, practice. The conviction or persuasion of the mind of a judge or 
  jury, by the exhibition of evidence, of the reality of a fact alleged: as, 
  to prove, is to determine or persuade that a thing does or does not exist. 8 
  Toull. n. 2; Ayl. Parerg. 442; 2 Phil. Ev. 44, n, a. Proof is the perfection 
  of evidence, for without evidence there is no proof, although, there may be 
  evidence which does not amount to proof: for example, a man is found 
  murdered at a spot where another had been seen walking but a short time 
  before, this fact would be evidence to show that the latter was the 
  murderer, but, standing alone, would be very far from proof of it. 
       2. Ayliffe defines judicial proof to be a clear and evident declaration 
  or demonstration, of a matter which was before doubtful, conveyed in a 
  judicial manner by fit and proper arguments, and likewise by all other legal 
  methods; first, by proper arguments, such as conjectures, presumptions, 
  indicia, and other adminicular ways and means; and, secondly, by legal 
  method, or methods according to law, such as witnesses, public instruments, 
  end the like. Parerg. 442 Aso. & Man. Inst. B. 3, t. 7. 

From The Devil's Dictionary (1881-1906) :

  PROOF, n.  Evidence having a shade more of plausibility than of
  unlikelihood.  The testimony of two credible witnesses as opposed to
  that of only one.

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