| 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.
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| 11. | Photography. a trial print from a negative. |
| 12. | Printing.
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| 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.
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proof (pr f) Pronunciation Key
A demonstration of the truth of a mathematical or logical statement, based on axioms and theorems derived from those axioms. |