Alternative form of testing, testing

A phrase used to check loudspeakers such as microphones and intercoms or wireless communications like a phone call.

The act of conducting a test; trialing, proving.

Difficult; tough.

present participle of test

plural of testing

(obsolete) A witness.

(obsolete, transitive) To attest (a document) legally, and date it. / (obsolete, intransitive) To make a testament, or will.

A challenge, trial. / A cupel or cupelling hearth in which precious metals are melted for trial and refinement. / (academia) An examination, given often during the academic term.

To challenge. / To refine (gold, silver, etc.) in a test or cupel; to subject to cupellation.