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

Alternative form of testing, testing

plural of Test

(law) A witness. / The witnessing or concluding clause, duty attached; said of a writ, deed, etc.

simple past tense and past participle of test

Difficult; tough.

The act of conducting a test; trialing, proving.

present participle of test

plural of test

Third-person singular simple present indicative form of test