Testing /(?)/

Test·ing

Testing

n.
  1. The act of testing or proving; trial; proof.
  2. The operation of refining gold or silver in a test, or cupel; cupellation. (Metal.)

Phrases & Compounds
Testing machine
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.