1. Evidence sufficient to establish a thing as true, or to produce belief in its truth.
2. The act of testing or making a trial of anything; a test; a trial.
3. The establishment of the truth of anything; a demonstration.
4. A sequence of steps, statements, or demonstrations that leads to a valid conclusion.
5. A test to determine the quality, durability, etc., of materials used in manufacturing.

1. To make a trial impression of something that is printed or engraved.
2. To read printed copy or to inspect a printed impression for errors.
3. To make something capable of resisting harm, injury, or damage: The store had coats made of fabric proofed material that prevented shrinkage.

1. A logical argument that tries to prove the existence of God from empirical information about the universe.
2. An argument for the existence of God, asserting that the contingency of each entity, and of the universe composed wholly of such entities, which demands the admission of an adequate external cause, which is God.