verb (used with object), proved, proved or proven, proving.
to establish the truth or genuineness of, as by evidence or argument: to prove one's claim.
Law. to establish the authenticity or validity of (a will); probate.
to give demonstration of by action.
to subject to a test, experiment, comparison, analysis, or the like, to determine quality, amount, acceptability, characteristics, etc.: to prove ore.
to show (oneself) to have the character or ability expected of one, especially through one's actions.
Mathematics. to verify the correctness or validity of by mathematical demonstration or arithmetical proof.
Also, proof. Printing. to take a trial impression of (type, a cut, etc.).
to cause (dough) to rise to the necessary lightness.
Archaic. to experience.
verb (used without object), proved, proved or proven, proving.
to turn out: The experiment proved to be successful.
to be found by trial or experience to be: His story proved false.
(of dough) to rise to a specified lightness: Leave covered until it has proved.

1125–75; Middle English proven < Old French prover < Latin probāre to try, test, prove, approve, derivative of probus good. See probity

provable, adjective
provability, provableness, noun
provably, adverb
provenly, adverb
prover, noun
half-proved, adjective
half-proven, adjective
nonprovable, adjective
overprove, verb (used with object), overproved, overproved or overproven, overproving.
preprove, verb (used with object), preproved, preproved or preproven, preproving.
self-proving, adjective
semiproven, adjective
unprovable, adjective
unproved, adjective
unproven, adjective
unproving, adjective
well-proved, adjective
well-proven, adjective

1. demonstrate, confirm, substantiate, verify.

1. disprove.

Either proved or proven is standard as the past participle of prove: Events have proved (or proven) him wrong. As a modifier, proven is by far the more common: a proven fact.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
prove (pruːv)
vb , proves, proving, proved, proved, proven
1.  (may take a clause as object or an infinitive) to establish or demonstrate the truth or validity of; verify, esp by using an established sequence of procedures or statements
2.  to establish the quality of, esp by experiment or scientific analysis
3.  law to establish the validity and genuineness of (a will)
4.  to show (oneself) able or courageous
5.  (copula) to be found or shown (to be): this has proved useless; he proved to be invaluable
6.  printing to take a trial impression of (type, etc)
7.  (intr) (of dough) to rise in a warm place before baking
8.  archaic to undergo
[C12: from Old French prover, from Latin probāre to test, from probus honest]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

c.1175, prouwe, from O.Fr. prover (11c.), from L. probare "to test, prove worthy," from probus "worthy, good, upright, virtuous," from PIE *pro-bhwo- "being in front," from *pro-, extended form of base *per-, + base *bhu- "to be" (cf. L. fui "I have been," futurus "about to be;" O.E. beon "to be;" see
Online Etymology Dictionary, © 2010 Douglas Harper
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