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Definitions for Proof

[1] evidence sufficient to establish a thing as true, or to produce belief in its truth.
[2] anything serving as such evidence: What proof do you have?
[3] the act of testing or making trial of anything; test; trial: to put a thing to the proof.
[4] the establishment of the truth of anything; demonstration.
[5] Law . (in judicial proceedings) evidence having probative weight.
[6] the effect of evidence in convincing the mind.
[7] an arithmetical operation serving to check the correctness of a calculation.
[8] Mathematics , Logic . a sequence of steps, statements, or demonstrations that leads to a valid conclusion.
[9] a test to determine the quality, durability, etc., of materials used in manufacture.
[10] Distilling . the arbitrary standard strength, as of an alcoholic liquor. strength with reference to this standard: “100 proof” signifies a proof spirit, usually 50% alcohol.
[11] Photography . a trial print from a negative.
[12] Printing . a trial impression, as of composed type, taken to correct errors and make alterations. one of a number of early and superior impressions taken before the printing of the ordinary issue: to pull a proof.
[13] (in printmaking) an impression taken from a plate or the like to show the quality or condition of work during the process of execution; a print pulled for examination while working on a plate, block, stone, etc.
[14] Numismatics . one of a limited number of coins of a new issue struck from polished dies on a blank having a polished or matte surface.
[15] the state of having been tested and approved.
[16] proved strength, as of armor.
[17] Scots Law . the trial of a case by a judge alone, without a jury.
[18] able to withstand; successful in not being overcome: proof against temptation.
[19] impenetrable, impervious, or invulnerable: proof against outside temperature changes.
[20] used for testing or proving; serving as proof.
[21] of standard strength, as an alcoholic liquor.
[22] of tested or proven strength or quality: proof armor.
[23] noting pieces of pure gold and silver that the U.S. assay and mint offices use as standards.
[24] to test; examine for flaws, errors, etc.; check against a standard or standards.
[25] Printing . prove(def 7) .
[26] to proofread.
[27] to treat or coat for the purpose of rendering resistant to deterioration, damage, etc. (often used in combination): to proof a house against termites; to shrink-proof a shirt.
[28] Cookery . to test the effectiveness of (yeast), as by combining with warm water so that a bubbling action occurs. to cause (especially bread dough) to rise due to the addition of baker's yeast or other leavening.
[29] a combining form meaning “resistant, impervious to” that specified by the initial element: burglarproof; childproof; waterproof.
[30] any evidence that establishes or helps to establish the truth, validity, quality, etc, of something
[31] law the whole body of evidence upon which the verdict of a court is based
[32] maths logic a sequence of steps or statements that establishes the truth of a proposition See also direct (def. 17), induction (def. 4), induction (def. 8)
[33] the act of testing the truth of something (esp in the phrase put to the proof )
[34] Scots law trial before a judge without a jury
[35] printing a trial impression made from composed type, or a print-out (from a laser printer, etc) for the correction of errors
[36] (in engraving, etc) a print made by an artist or under his supervision for his own satisfaction before he hands the plate over to a professional printer
[37] photog a trial print from a negative
[38] the alcoholic strength of proof spirit the strength of a beverage or other alcoholic liquor as measured on a scale in which the strength of proof spirit is 100 degrees
[39] (usually postpositive foll by against ) able to resist; impervious (to) the roof is proof against rain
[40] having the alcoholic strength of proof spirit
[41] of proved strength or impenetrability proof armour
[42] (tr) to take a proof from (type matter, a plate, etc)
[43] to proofread (text) or inspect (a print, etc), as for approval
[44] to render (something) proof, esp to waterproof
[45] secure against (damage by); (make) impervious to waterproof ; mothproof ; childproof

Words related to Proof

information, confirmation, picture, demonstration, argument, clue, reason, criterion, testimony, testament, validation, data, verification, impression, exhibit, wherefore, attestation, facts, witness, corroboration

Words nearby Proof

pronuke, pronunciamento, pronunciation, pronunciation spelling, prony brake, proof, proof of concept, proof of the pudding, proof of the pudding, the, proof sheet, proof spirit

Origin of Proof

1175–1225; Middle English prove, prooff, prof, proufe, alteration (by association with the vowel of prove) of preove, proeve, prieve, pref < Middle French preve, proeve, prueve < Late Latin proba a test, akin to Latin probāre to test and find good; cf. pree

Other words from Proof

re-proof , verb (used with object)
un·proofed , adjective

Word origin for Proof

-prooffrom proof (adj)

Synonyms for Proof

argument, clue, confirmation, criterion, data, demonstration, information, picture, reason, testament, testimony, validation, verification, affidavit, attestation, averment, case, certification, clincher, corroboration, credentials, cue, deposition, documents, establishment, exhibit, facts, goods, grabber, grounds, nitty-gritty, reasons, record, scoop, score, skinny, substantiation, trace, warrant, wherefore, why, witness, chapter and verse, lowdown, paper trail, smoking gun, straight stuff, whyfor