noun. The evidence or argument that compels the mind to accept an assertion as true.

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noun. The validation of a proposition by application of specified rules, as of induction or deduction, to assumptions, axioms, and sequentially derived conclusions.

noun. A statement or argument used in such a validation.

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noun. Convincing or persuasive demonstration.

noun. The state of being convinced or persuaded by consideration of evidence.

noun. Determination of the quality of something by testing; trial.

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noun. The establishment of the truth or falsity of an allegation by evidence.

noun. The evidence offered in support of or in contravention of an allegation.

noun. The alcoholic strength of a liquor, expressed by a number that is twice the percentage by volume of alcohol present.

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noun. A trial sheet of printed material that is made to be checked and corrected.

noun. A trial impression of a plate, stone, or block taken at any of various stages in engraving.

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noun. A trial photographic print.

noun. 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.

noun. Proven impenetrability.

adjective. Fully or successfully resistant; impervious. Often used in combination.

adjective. Of standard alcoholic strength.

adjective. Used to proofread or correct typeset copy.

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intransitive verb. To make a trial impression of (printed or engraved matter).

intransitive verb. To proofread (copy).

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intransitive verb. To activate (dormant dry yeast) by adding water.

intransitive verb. To work (dough) into proper lightness.

intransitive verb. To treat so as to make resistant.

intransitive verb. To proofread.

intransitive verb. To become properly light for cooking.

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noun. An assay of a bullion of known composition placed in the muffle with the other assays in order to determine the difference in weight due to the loss of silver by volatilization and absorption by the cupel.

noun. In photography, a trial print from a negative.

noun. Any effort, act, or operation made for the purpose of ascertaining any truth or fact; a test; a trial: as, to make proof of a person's trustworthiness or courage.

noun. Evidence and argumentation putting the conclusion beyond reasonable doubt; demonstration, perfect or imperfect.

noun. A thing proved or tried; truth or knowledge gathered by experience; experience.

noun. The state of having been tested and approved; firmness, hardness, or impenetrability: specifically applied to arms or armor of defense, to note that they have been duly tested and are impenetrable.

noun. In law: The convincing effect of evidence; the manifestation of the truth of a proposition by presenting the reasons for assenting to it; such an array of evidence as should determine the judgment of the tribunal in regard to a matter of fact.

noun. plural In equity practice, the instruments of evidence in their documentary form, as depositions, deeds, etc., received in a cause.

noun. The presentation of sufficient evidence: as, the burden of proof lies with the plaintiff.

noun. In Scots law, the taking of evidence by a judge upon an issue framed in pleading.

noun. A test applied to manufactured articles or to natural substances prepared for use; hence, the state of that which has undergone this test, or is capable of undergoing it satisfactorily. Compare armor of proof.

noun. 7. In alcoholic liquors, the degree of strength which gives a specific gravity of 0.920. See II., 2.

noun. In printing, a trial impression from composed type, taken for correction.

noun. In engraving and etching, an impression taken from an engraved plate to show its state during the progress of executing it; also, an early and superior impression, or one of a limited number, taken before the title or inscription is engraved on the plate, and known as proof before letter.

noun. In numismatics, any early impression struck at the mint from a coin-die used for producing the current coins of the realm.

noun. In bookbinding, the rough uncut edges of the shorter leaves of a trimmed book, which prove that the book has not been cut down too much.

noun. In arithmetic, an operation serving to check the accuracy of the calculation.

noun. Proof independent of experience.