n. 1. The act of testing or proving; trial; proof. [ 1913 Webster ]
2. (Metal.) The operation of refining gold or silver in a test, or cupel; cupellation. [ 1913 Webster ]
Testing machine (Engin.), a machine used in the determination of the strength of materials, as iron, stone, etc., and their behavior under strains of various kinds, as elongation, bending, crushing, etc. [ 1913 Webster ]