- Proof is evidence or argument that forces someone to believe something as true.
An example of proof is someone returning to eat at the same restaurant many times showing they enjoy the food.
proof definition by Webster's New World
- the act or process of proving; a testing or trying of something
- anything serving or tending to establish the truth of something, or to convince one of its truth; conclusive evidence
- the establishment of the truth of something: to work on the proof of a theory
- a test or trial of the truth, worth, quality, etc. of something: the proof of the pudding is in the eating
- the quality or condition of having been tested or proved
- Obsolete tested or proved strength, as of armor
- the relative strength of an alcoholic liquor with reference to the arbitrary standard for proof spirit
- this standard, taken as 100 proof
- Engraving a trial impression taken from a plate, block, or stone
- Law all the facts, admissions, and conclusions drawn from evidence which together operate to determine a verdict or judgment
- Math. a process for checking the correctness of a computation, as, in a subtraction problem, by adding the difference to the subtrahend to get the minuend
- Numismatics any of a limited number of coins of a new issue, struck with special care
- Photog. a trial print of a negative
- Printing an impression of composed type taken for checking errors and making changes
Origin: Middle English profe ; from Old French prueve ; from Late Latin proba ; from Classical Latin probare: see probe
- of tested and proved strength
- impervious or invulnerable to; able to resist, withstand, etc.: with against: proof against criticism
- used in proving or testing
- of standard strength: said of alcoholic liquors
- to make a proof of
- to make resistant or impervious to something
- impervious to: waterproof
- protected from or against: foolproof, rustproof
- resistant to, unaffected by: fireproof
Origin: ; from proof
proof definition by American Heritage Dictionary
- The evidence or argument that compels the mind to accept an assertion as true.
- a. The validation of a proposition by application of specified rules, as of induction or deduction, to assumptions, axioms, and sequentially derived conclusions.b. A statement or argument used in such a validation.
- a. Convincing or persuasive demonstration: was asked for proof of his identity; an employment history that was proof of her dependability.b. The state of being convinced or persuaded by consideration of evidence.
- 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. A trial sheet of printed material that is made to be checked and corrected. Also called proof sheet.b. A trial impression of a plate, stone, or block taken at any of various stages in engraving.
- a. A trial photographic print.b. Any of a limited number of newly minted coins or medals struck as specimens and for collectors from a new die on a polished planchet.
- Archaic Proven impenetrability: “I was clothed in Armor of proof” (John Bunyan).
- Fully or successfully resistant; impervious. Often used in combination: waterproof watches; a fireproof cellar door.
- Of standard alcoholic strength.
- Used in proving or making corrections.
- Printing a. To make a trial impression of (printed or engraved matter).b. To proofread (copy).
- a. To activate (dormant dry yeast) by adding water.b. To work (dough) into proper lightness.
- To treat so as to make resistant: proof a fabric against shrinkage.
- Printing To proofread.
- To become properly light for cooking: The batter proofed overnight.
Origin: Middle English prove, preve, from Anglo-Norman prove and from Old French prueve, both from Late Latin proba, from Latin probāre, to prove; see prove.
- proofˈer noun
proof - Computer Definition
proof - Legal Definition
proof - Science Definition