- (a.) Being of a certain standard as to strength; -- said of alcoholic liquors.
- (n.) Any effort, process or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.
- (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.
- (v.t.) Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.
- (n.) A process for testing the accuracy of an operation performed. Cf. Prove, v. t., 5.
- (a.) Firm or successful in resisting; as, proof against harm; waterproof; bombproof.
- (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.
- (a.) Used in proving or testing; as, a proof load or proof charge.
- (n.) A trial impression, as from type, taken for correction or examination; -- called also proof sheet.
- (n.) Firmness of mind; stability not to be shaken.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). proof. Retrieved September 22, 2026, from http://smartdefine.org/proof/definitions/2049851 |
| Chicago | Webster's. 2011. "proof" http://smartdefine.org/proof/definitions/2049851 (accessed September 22, 2026). |
| Harvard | Webster's 2011, proof, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/proof/definitions/2049851>. |
| MLA | Webster's. "proof" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/proof/definitions/2049851> |