prove
 IPA: /pɹuːv/
 Rhymes: uːv
 ( transitive ) To demonstrate that something is true or viable; to give proof for .
 2012 August 5, Nathan Rabin, “TV: Review: THE SIMPSONS ( CLASSIC ): “I Love Lisa” ( season 4, episode 15; originally aired 02/11/1993 )”:
 Valentine’s Day means different things for different people. For Homer, it means forking over a hundred dollars for a dusty box of chocolates at the KwikEMart after characteristically forgetting the holiday yet again. For Ned, it’s another opportunity to prove his love for his wife. Most germane to the episode, for Lisa, Valentine’s Day means being the only person in her entire class to give Ralph a Valentine after noticing him looking crestfallen and alone at his desk .
 The hypothesis has not been proven to our satisfaction .
 1749, John Cleland, Fanny Hill: Memoirs of a Woman of Pleasure Part 3
 Mr. H . . ., whom no distinctions of that sort seemed to disturb, scarce gave himself or me breathing time from the last encounter, but, as if he had task'd himself to prove that the appearances of his vigour were not signs hung out in vain, in a few minutes he was in a condition for renewing the onset
 2012 August 5, Nathan Rabin, “TV: Review: THE SIMPSONS ( CLASSIC ): “I Love Lisa” ( season 4, episode 15; originally aired 02/11/1993 )”:
 ( intransitive ) To turn out; to manifest .
 ( copulative ) To turn out to be .
 2012 May 5, Phil McNulty, “Chelsea 21 Liverpool”, BBC Sport:
 He met Luis Suarez's cross at the far post, only for Chelsea keeper Petr Cech to show brilliant reflexes to deflect his header on to the bar. Carroll turned away to lead Liverpool's insistent protests that the ball had crossed the line but referee Phil Dowd and assistant referee Andrew Garratt waved play on, with even a succession of replays proving inconclusive .
 2012 May 5, Phil McNulty, “Chelsea 21 Liverpool”, BBC Sport:
 ( transitive ) To ( put to the ) test, proof
 ( archaic ) To experience
 disprovability
 disprovable, disprovably
 disprove
 disproved, disproven
 exception that proves the rule
 provability
 provable
 provably
 prove out
 prover
 proving ground
 unprovability
 unprovable
 unprovably
 unprove
 unproved
 unproven
 ( RP ) IPA: /pɹəʊv/
Etymology 1
From Middle English proven, from Old English prōfian ( “to esteem, regard as, evince, try, prove” ), from Late Latin probō ( “test, try, examine, approve, show to be good or fit, prove”, v ), from probus ( “good, worthy, excellent” ), from ProtoIndoEuropean *probhwo ( “being in front, prominent” ), from ProtoIndoEuropean *pro, *per ( “toward” ) + ProtoIndoEuropean *bhu ( “to be” ). Influenced by Old French prover, from the same Latin source. Displaced native Middle English sothen ( “to prove” ), from Old English sōþian ( “to prove” ). More at for, be .
Pronunciation
Alternative form
Verb
prove ( thirdperson singular simple present proves present participle proving, simple past proved, past participle proved or proven )
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Related terms
Etymology 2
Simple past form of proove, conjugated in the Germanic strong declension, on the pattern of choose → chose .
Pronunciation
Statistics
Explanation of prove by Wordnet Dictionary
prove

establish the validity of something, as by an example, explanation or experiment
 prove a will

take a trial impression of

put to the test, as for its quality, or give experimental use to
 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.
Definition of prove by GCIDE Dictionary