n. 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.n. Evidence and argumentation putting the conclusion beyond reasonable doubt; demonstration, perfect or imperfect.n. A thing proved or tried; truth or knowledge gathered by experience; experience.n. 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.n. 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.n. plural In equity practice, the instruments of evidence in their documentary form, as depositions, deeds, etc., received in a cause.n. The presentation of sufficient evidence: as, the burden of proof lies with the plaintiff.n. In Scots law, the taking of evidence by a judge upon an issue framed in pleading.n. 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.n. 7. In alcoholic liquors, the degree of strength which gives a specific gravity of 0.920. See II., 2.n. In printing, a trial impression from composed type, taken for correction.n. 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.n. In numismatics, any early impression struck at the mint from a coin-die used for producing the current coins of the realm.n. 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.n. In arithmetic, an operation serving to check the accuracy of the calculation.n. Proof independent of experience.n. Synonyms Experiment, essay, ordeal.n. Testimony, etc. (see evidence and inference), demonstration, certification.Impenetrable; able to resist, physically or morally: as, water-proof, fire-proof, shot-proof, bribe-proof: often followed by to or against before the thing resisted.Noting alcoholic liquors which have the specific gravity 0.91984, usually considered as 0.920, which is sufficiently accurate for practical purposes.Of excellent quality: said of land.n. n. 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.n. In photography, a trial print from a negative.
