Proof:
noun
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. a. the arbitrary standard strength, as of an alcoholic liquor.
b. 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. a trial impression, as of composed type, taken to correct errors and make alterations.
b. 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.
