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.-to evince, establish, or ascertain, as truth, reality, or fact, by argument, testimony, or other evidence.-to ascertain or establish the genuineness or validity of; to verify; as, to prove a will.-to gain experience of the good or evil of; to know by trial; to experience; to suffer.-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.-to take a trial impression of; to take a proof of; as, to prove a page.-to make trial; to essay.-to be found by experience, trial, or result; to turn out to be; as, a medicine proves salutary; the report proves false.-to succeed; to turn out as expected.