**Prove** (?), v. t. [imp. & p. p. Proved (?); p. pr. & vb. n. Proving.] [OE. *prover*, F. *prouver*, fr. L. *probare* to try, approve, prove, fr. *probus* good, proper. Cf. Probable, Proof, Probe.]

**1.**

To try or to ascertain by an experiment, or by a test or standard; to test; as, to **prove** the strength of gunpowder or of ordnance; to **prove** the contents of a vessel by a standard measure.

Thou hast **proved** mine heart.
*Ps. xvii. 3.*

**2.**

To evince, establish, or ascertain, as truth, reality, or fact, by argument, testimony, or other evidence.

They have inferred much from slender premises, and conjectured when they could not **prove**.
*J. H. Newman.*

**3.**

To ascertain or establish the genuineness or validity of; to verify; as, to **prove** a will.

**4.**

To gain experience of the good or evil of; to know by trial; to experience; to suffer.

Where she, captived long, great woes did **prove**.
*Spenser.*

**5.** Arith.

To test, evince, ascertain, or verify, as the correctness of any operation or result; thus, in subtraction, if the difference between two numbers, added to the lesser number, makes a sum equal to the greater, the correctness of the subtraction is *proved*.

**6.** Printing

To take a trial impression of; to take a proof of; as, to **prove** a page.

Syn. -- To try; verify; justify; confirm; establish; evince; manifest; show; demonstrate.

© Webster 1913.

**Prove**, v. i.

**1.**

To make trial; to essay.

**2.**

To be found by experience, trial, or result; to turn out to be; as, a medicine **proves** salutary; the report **proves** false.

"The case

*proves* mortal."

*Arbuthnot*.

So life a winter's morn may **prove**.
*Keble.*

**3.**

To succeed; to turn out as expected.

[Obs.] "The experiment

*proved* not."

*Bacon.*

© Webster 1913.