testing

The act of testing or proving; trial; proof.

The operation of refining gold or silver in a test, or cupel; cupellation.

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.

Present participle of test.

difficult, tough

The act of conducting a test; trialing, proving

the act of giving students or candidates a test (as by questions) to determine what they know or have learned

an examination of the characteristics of something

the act of subjecting to experimental test in order to determine how well something works