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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 (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 (8 matching dictionaries)

33. proof: ArtLex Lexicon of Visual Art Terminology [home, info]
34. proof: Dictionary of Philosophical Terms and Names [home, info]
35. Proof: English-Chinese Dictionary of Graphic Communications (Big 5) [home, info]
36. proof: Coin Collecting Glossary [home, info]
37. Proof: Epicurus.com Spirits Glossary [home, info]
38. PROOF: Shakespeare Glossary [home, info]
39. Proof: Glossary of Stamp Collecting Terms [home, info]
40. proof: ODLIS: Online Dictionary of Library and Information Science [home, info]

Business (11 matching dictionaries)

41. Proof: MoneyGlossary.com [home, info]
42. proof: Webster's New World Law Dictionary [home, info]
43. proof: Law.com Dictionary [home, info]
44. proof: Everybody's Legal Dictionary [home, info]
45. proof: INVESTORWORDS [home, info]
46. Proof: THE 'LECTRIC LAW LIBRARY'S REFERENCE ROOM [home, info]
47. proof: Glossary of Legal Terms [home, info]
48. proof: Glossary of research economics [home, info]
49. PROOF: Bouvier's Law Dictionary 1856 Edition [home, info]
50. Proof (disambiguation), proof: Legal dictionary [home, info]
51. proof: BusinessDictionary.com [home, info]

Computing (2 matching dictionaries)

52. proof: Free On-line Dictionary of Computing [home, info]
53. Proof (alcohol), Proof (disambiguation), Proof (logic), Proof (rapper), proof: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

54. proof: online medical dictionary [home, info]
55. Proof (disambiguation), proof: Medical dictionary [home, info]

Miscellaneous (4 matching dictionaries)

56. PROOF: Acronym Finder [home, info]
57. PROOF: AbbreviationZ [home, info]
58. Proof: SPIRITS Terminology [home, info]
59. proof: Idioms [home, info]

Religion (1 matching dictionary)

60. Proof: Catholic Encyclopedia [home, info]

Science (8 matching dictionaries)

61. Proof: Misunderstood Physics Terms [home, info]
62. Proof: A Glossary of Mathematical Terms [home, info]
63. Proof: Eric Weisstein's World of Mathematics [home, info]
64. Proof: The Computational Beauty of Nature [home, info]
65. proof: PlanetMath Encyclopedia [home, info]
66. Proof: Physic and Astronomy Glossary [home, info]
67. proof (prf): How Many? A Dictionary of Units of Measurement [home, info]
68. proof: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Tech (6 matching dictionaries)

69. proof: Book Binding [home, info]
70. Proof: Culinary Cafe [home, info]
71. Proof: Glossary of Whisky terms [home, info]
72. Proof: Happy Hour Spirit & Liqueur Dictionary [home, info]
73. Proof: Coin Collecting [home, info]
74. proof: Rane Professional Audio Reference [home, info]

(Note: See proofs for more definitions.)

Quick definitions from Macmillan ( ) 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 ▸ Word origin ▸ Words similar to proof ▸ Usage examples for proof ▸ Idioms related to proof (New!) ▸ Popular adjectives describing proof ▸ Words that often appear near proof ▸ Rhymes of proof ▸ Invented words related to proof