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We found 76 dictionaries with English definitions that include the word proof:
Click on the first link on a line below to go directly to a page where "proof" is defined.

General dictionaries General (34 matching dictionaries)
  1. proof: Merriam-Webster.com [home, info]
  2. proof: Oxford Learner's Dictionaries [home, info]
  3. proof: American Heritage Dictionary of the English Language [home, info]
  4. -proof, proof: Collins English Dictionary [home, info]
  5. proof: Vocabulary.com [home, info]
  6. -proof, proof, proof, proof: Macmillan Dictionary [home, info]
  7. Proof, proof: Wordnik [home, info]
  8. -proof, proof: Cambridge Advanced Learner's Dictionary [home, info]
  9. Proof, -proof, proof: Wiktionary [home, info]
  10. -proof, proof: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. -proof, proof: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. proof: Infoplease Dictionary [home, info]
  13. -proof, proof: Dictionary.com [home, info]
  14. proof: Online Etymology Dictionary [home, info]
  15. proof: UltraLingua English Dictionary [home, info]
  16. proof: Cambridge Dictionary of American English [home, info]
  17. proof: Cambridge International Dictionary of Idioms [home, info]
  18. Proof (I Am Kloot song), Proof (Paul Simon song), Proof (U.S. TV series), Proof (alcohol), Proof (comics), Proof (film), Proof (firearms), Proof (mathematics), Proof (play), Proof (rapper), Proof (truth), Proof: Wikipedia, the Free Encyclopedia [home, info]
  19. Proof: Online Plain Text English Dictionary [home, info]
  20. proof: Webster's Revised Unabridged, 1913 Edition [home, info]
  21. proof: Rhymezone [home, info]
  22. proof: AllWords.com Multi-Lingual Dictionary [home, info]
  23. proof: Webster's 1828 Dictionary [home, info]
  24. Proof: Dictionary of Phrase and Fable (1898) [home, info]
  25. Proof: 1911 edition of the Encyclopedia Britannica [home, info]
  26. proof: Free Dictionary [home, info]
  27. proof: Mnemonic Dictionary [home, info]
  28. proof: WordNet 1.7 Vocabulary Helper [home, info]
  29. proof: LookWAYup Translating Dictionary/Thesaurus [home, info]
  30. Proof (alcohol): The Word Detective [home, info]
  31. proof: Dictionary/thesaurus [home, info]
  32. proof: Wikimedia Commons US English Pronunciations [home, info]

Art dictionaries Art (8 matching dictionaries)
  1. proof: ArtLex Lexicon of Visual Art Terminology [home, info]
  2. proof: Dictionary of Philosophical Terms and Names [home, info]
  3. Proof: English-Chinese Dictionary of Graphic Communications (Big 5) [home, info]
  4. proof: Coin Collecting Glossary [home, info]
  5. Proof: Epicurus.com Spirits Glossary [home, info]
  6. PROOF: Shakespeare Glossary [home, info]
  7. Proof: Glossary of Stamp Collecting Terms [home, info]
  8. proof: ODLIS: Online Dictionary of Library and Information Science [home, info]

Business dictionaries Business (11 matching dictionaries)
  1. Proof: MoneyGlossary.com [home, info]
  2. proof: Webster's New World Law Dictionary [home, info]
  3. proof: Law.com Dictionary [home, info]
  4. proof: Everybody's Legal Dictionary [home, info]
  5. proof: INVESTORWORDS [home, info]
  7. proof: Glossary of Legal Terms [home, info]
  8. proof: Glossary of research economics [home, info]
  9. PROOF: Bouvier's Law Dictionary 1856 Edition [home, info]
  10. Proof (disambiguation), proof: Legal dictionary [home, info]
  11. proof: BusinessDictionary.com [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. proof: Free On-line Dictionary of Computing [home, info]
  2. Proof (alcohol), Proof (disambiguation), Proof (logic), Proof (rapper), proof: Encyclopedia [home, info]

Medicine dictionaries Medicine (2 matching dictionaries)
  1. proof: online medical dictionary [home, info]
  2. Proof (disambiguation), proof: Medical dictionary [home, info]

Miscellaneous dictionaries Miscellaneous (4 matching dictionaries)
  1. PROOF: Acronym Finder [home, info]
  2. PROOF: AbbreviationZ [home, info]
  3. Proof: SPIRITS Terminology [home, info]
  4. proof: Idioms [home, info]

Religion dictionaries Religion (1 matching dictionary)
  1. Proof: Catholic Encyclopedia [home, info]

Science dictionaries Science (8 matching dictionaries)
  1. Proof: Misunderstood Physics Terms [home, info]
  2. Proof: A Glossary of Mathematical Terms [home, info]
  3. Proof: Eric Weisstein's World of Mathematics [home, info]
  4. Proof: The Computational Beauty of Nature [home, info]
  5. proof: PlanetMath Encyclopedia [home, info]
  6. Proof: Physic and Astronomy Glossary [home, info]
  7. proof (prf): How Many? A Dictionary of Units of Measurement [home, info]
  8. proof: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Tech dictionaries Tech (6 matching dictionaries)
  1. proof: Book Binding [home, info]
  2. Proof: Culinary Cafe [home, info]
  3. Proof: Glossary of Whisky terms [home, info]
  4. Proof: Happy Hour Spirit & Liqueur Dictionary [home, info]
  5. Proof: Coin Collecting [home, info]
  6. proof: Rane Professional Audio Reference [home, info]

(Note: See proofs for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

Provided by

Quick definitions from WordNet (proof)

noun:  a trial photographic print from a negative
noun:  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")
noun:  (printing) an impression made to check for errors
noun:  a formal series of statements showing that if one thing is true something else necessarily follows from it
noun:  a measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume)
noun:  the act of validating; finding or testing the truth of something
verb:  activate by mixing with water and sometimes sugar or milk ("Proof yeast")
verb:  knead to reach proper lightness ("Proof dough")
verb:  make resistant to water, sound, errors, etc. ("Proof the materials against shrinking in the dryer")
verb:  make or take a proof of, such as a photographic negative, an etching, or typeset
verb:  read for errors ("I should proofread my manuscripts")

▸ Also see proofs
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Usage examples for proof

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Popular adjectives describing proof

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Phrases that include proof:   damp proof course, bullet proof, idiot proof, high proof, mathematical proof, more...

Words similar to proof:   proofed, proofer, proofing, proofread, proving, validating, validation, cogent evidence, evidence, test copy, more...

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