proof /ˈpruf/
 證據,證明,試驗,檢驗,考驗(a.)不能透入的,證明用的,防…的
 proof
 防潮
 proof
 證明
 proof
 核符總計
 proof
 證明 防止
 Proof n.
 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 proof.   --Spenser.
    You shall have many proofs to show your skill.   --Ford.
    Formerly, a very rude mode of ascertaining the strength of spirits was practiced, called the proof.   --Ure.
 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.
    I'll have some proof.   --Shak.
    It is no proof of a man's understanding to be able to confirm whatever he pleases.   --Emerson.
 Note: ☞ Properly speaking, proof is the effect or result of evidence, evidence is the medium of proof.  Cf. Demonstration, 1.
 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.
 4. Firmness of mind; stability not to be shaken.
 5. Print. A trial impression, as from type, taken for correction or examination; -- called also proof sheet.
 6. Math. A process for testing the accuracy of an operation performed.  Cf. Prove, v. t., 5.
 7. Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof. [Obs.]
 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.
 Syn: -- Testimony; evidence; reason; argument; trial; demonstration. See Testimony.
 Proof, a.
 1. Used in proving or testing; as, a proof load, or proof charge.
 2. Firm or successful in resisting; as, proof against harm; waterproof; bombproof.
 I . . . have found thee
 Proof against all temptation.   --Milton.
    This was a good, stout proof article of faith.   --Burke.
 3. Being of a certain standard as to strength; -- said of alcoholic liquors.
 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° Fahrenheit being of specific gravity 0.7939 referred to water at its maximum density as unity. Proof spirit has at 60° 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° Fahrenheit weigh exactly the 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 respectively.
 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 doctrine.
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From: WordNet (r) 2.0

 proof
      adj : (used in combination or as a suffix) able to withstand;
            "temptation-proof"; "childproof locks" [syn: proof(p)]
      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: 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: 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, 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]
      4: activate by mixing with water and sometimes sugar or milk;
         "proof yeast"
      5: make resistant to water, sound, errors, etc.; "proof the
         materials against shrinking in the dryer"