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1. Dictionary

   proof

   /pruːf/

   noun

   • 1. evidence or argument establishing a fact or the truth of a statement: "you will be asked to give proof of your identity" Similar evidenceverificationcorroborationauthenticationconfirmationcertificationvalidationattestationdemonstrationsubstantiationwitnesstestamentdocumentationfactsdatatestimonyammunition
   • ▪ the spoken or written evidence in a trial.
   • ▪ the action of establishing the truth of a statement: "spatial dimensions whose very existence is beyond all hope of proof"
   • ▪ a series of stages in the resolution of a mathematical or philosophical problem.
   • 2. a trial impression of a page, taken from type or film and used for making corrections before final printing. Similar page proofgalley proofgalleypullsliptrial printrevise
   • ▪ a trial photographic print made for initial selection.
   • ▪ each of a number of impressions from an engraved plate, especially (in commercial printing) of a limited number before the ordinary issue is printed and before an inscription or signature is added.
   • ▪ a specially struck specimen coin with a polished or frosted finish.
   • 3. the strength of distilled alcoholic spirits, relative to proof spirit taken as a standard of 100: "powerful 132-proof rum"
   • 4. a test or trial of something.
   • 5. a trial or a civil case before a judge without a jury.

   adjective

   • 1. able to withstand something damaging; resistant: "the marine battle armour was proof against most weapons"
   • 2. denoting a trial impression of a page or printed work: "a proof copy is sent up for checking"

   verb

   • 1. make (fabric) waterproof: "if you are using a piece of lightweight canvas it will be necessary to proof the fabric when complete"
   • 2. make a proof of (a printed work, engraving, etc.): "proof each plate and print it on acetate first"
   • ▪ proofread (a text): "William proofed much of her work"
   • 3. activate (yeast) by the addition of liquid: North American "proof the yeast with the teaspoon of sugar"
   • ▪ knead (dough) until light and smooth.
   • ▪ (of dough) prove: "shape into a baguette and let proof for a few minutes"

   Word Origin Middle Englishpreve, from Old French proeve, from late Latin proba, from Latin probare ‘to test, prove’. The change of vowel in late Middle English was due to the influence of prove. Current senses of the verb date from the late 19th century.

   Derivatives

   • 1. proofless adjective

   Scrabble Points: 10

   • P

     3

   • R

     1

   • O

     1

   • O

     1

   • F

     4

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   More definitions, origin and scrabble points

2. dictionary.cambridge.org › dictionary › englishPROOF | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   Learn the meaning of proof as a noun, adjective, verb and suffix in English. Find out how to use proof in different contexts, such as mathematics, alcohol, printing and protection.

   • Proof

     PROOF meaning: 1. a fact or piece of information that shows...

   • Portuguese Translation

     PROOF translate: prova, à prova de, prova [feminine]. Learn...

   • Vietnamese Translation

     PROOF translate: chứng cớ, bản in thử, bức ảnh rửa thử,...

   • Traditional

     PROOF translate: 證明真實, 證據；證物；證明, 印刷品, 校樣, 酒精, 標準酒精濃度的, 受保護的,...

3. www.merriam-webster.com › dictionary › proofProof Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › proof

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   Learn the various meanings and uses of the word proof as a noun, adjective, and verb. Find synonyms, examples, etymology, and related phrases of proof.

4. Videos

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5. www.dictionary.com › browse › proofPROOF Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › proof

   • Cached

   noun. evidence sufficient to establish a thing as true, or to produce belief in its truth. Synonyms: support, corroboration, demonstration, confirmation. anything serving as such evidence: What proof do you have? the act of testing or making trial of anything; test; trial: to put a thing to the proof. Synonyms: assay, examination.

6. www.collinsdictionary.com › dictionary › englishPROOF definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Learn the various meanings and uses of the word proof in English, from fact, argument, or evidence to support a claim, to a trial print of a book or a drink's strength. See synonyms, examples, and pronunciation of proof.

7. www.thefreedictionary.com › proofProof - definition of proof by The Free Dictionary

   www.thefreedictionary.com › proof

   • Cached

   Proof is evidence or argument that supports a claim as true, or a test of quality or validity. It can also refer to the alcoholic strength of a liquor, a trial print, or a type of coin.

8. www.oxfordlearnersdictionaries.com › definition › englishproof noun - Definition, pictures, pronunciation and usage notes...

   www.oxfordlearnersdictionaries.com › definition › english

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   Learn the meaning, pronunciation and usage of the word proof as a noun in English. Find out the different types and contexts of proof, such as evidence, mathematical proof, proofreading and living proof.

9. www.vocabulary.com › dictionary › proofProof - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › proof

   Proof is the evidence that shows something is true or valid. When you show the logical steps that take you from your hypothesis that the world is round to the conclusion that it is, you're formulating a proof.