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.

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.*