From The Collaborative International Dictionary of English v.0.48 [gcide]:
Prove \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.
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Thou hast proved mine heart. --Ps. xvii. 3.
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2. To evince, establish, or ascertain, as truth, reality, or
fact, by argument, testimony, or other evidence.
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They have inferred much from slender premises, and
conjectured when they could not prove. --J. H.
Newman.
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3. To ascertain or establish the genuineness or validity of;
to verify; as, to prove a will.
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4. To gain experience of the good or evil of; to know by
trial; to experience; to suffer.
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Where she, captived long, great woes did prove.
--Spenser.
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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.
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6. (Printing) To take a trial impression of; to take a proof
of; as, to prove a page.
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Syn: To try; verify; justify; confirm; establish; evince;
manifest; show; demonstrate.
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From WordNet (r) 3.0 (2006) [wn]:
proved
adj 1: established beyond doubt; "a proven liar"; "a Soviet
leader of proven shrewdness" [syn: {proved}, {proven}]
[ant: {unproved}, {unproven}]
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