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, esp. 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.

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.