Proof Proof, n. [OF. prove, proeve, F. preuve, fr. L. proba, fr. probare to prove. See {Prove}.] [1913 Webster] 1. Any effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial. [1913 Webster]

For whatsoever mother wit or art Could work, he put in proof. --Spenser. [1913 Webster]

You shall have many proofs to show your skill. --Ford. [1913 Webster]

Formerly, a very rude mode of ascertaining the strength of spirits was practiced, called the proof. --Ure. [1913 Webster]

2. 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. [1913 Webster]

I'll have some proof. --Shak. [1913 Webster]

It is no proof of a man's understanding to be able to confirm whatever he pleases. --Emerson. [1913 Webster]

Note: Properly speaking, proof is the effect or result of evidence, evidence is the medium of proof. Cf. {Demonstration}, 1. [1913 Webster]

3. 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. [1913 Webster]

4. Firmness of mind; stability not to be shaken. [1913 Webster]

5. (Print.) A trial impression, as from type, taken for correction or examination; -- called also {proof sheet}. [1913 Webster]

6. (Math.) A process for testing the accuracy of an operation performed. Cf. {Prove}, v. t., 5. [1913 Webster]

7. Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof. [Obs.] --Shak. [1913 Webster]

{Artist's proof}, a very early proof impression of an engraving, or the like; -- often distinguished by the artist's signature.

{Proof reader}, one who reads, and marks correction in, proofs. See def. 5, above. [1913 Webster]

Syn: Testimony; evidence; reason; argument; trial; demonstration. See {Testimony}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


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