In fact, most of the usages of the word "proof" involve testing rather than the operation of pure logic:
- Determination of the quality of something by testing; trial: put one's beliefs to the proof.
- Law. The result or effect of evidence; the establishment or denial of a fact by evidence.
- The alcoholic strength of a liquor, expressed by a number that is twice the percentage by volume of alcohol present.
- Printing.
- A trial sheet of printed material that is made to be checked and corrected. Also called proof sheet.
- A trial impression of a plate, stone, or block taken at any of various stages in engraving.