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Proof (n.) Any effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.
Proof (n.) That degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments that induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration.
Proof (n.) The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield to force; impenetrability of physical bodies.
Proof (n.) Firmness of mind; stability not to be shaken.
Proof (n.) A trial impression, as from type, taken for correction or examination; -- called also proof sheet.
Proof (n.) A process for testing the accuracy of an operation performed. Cf. Prove, v. t., 5.
Proof (v. t.) Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.
Proof (a.) Used in proving or testing; as, a proof load, or proof charge.
Proof (a.) Firm or successful in resisting; as, proof against harm; waterproof; bombproof.
Proof (a.) Being of a certain standard as to strength; -- said of alcoholic liquors.