5. (Print.) A trial impression, as from type, taken for correction or
examination; -- called also proof sheet.
6. (Math.) A process for testing the accuracy of an operation
performed. Cf. Prove, v. t., 5.
7. Armor of excellent or tried quality, and deemed impenetrable;
properly, armor of proof. [Obs.] Shak.
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.
Syn. -- Testimony; evidence; reason; argument; trial; demonstration.
See Testimony.
Proof, a.