plural of q-tof

(US) A security clearance issued by the United States Department of Energy, allowing access to top-secret material.

plural of Q-ship

plural of Q clearance

Synonym of Q-ship / (slang) An unmarked police car carrying plainclothes police officers.

plural of Q-boat

(military) A merchant ship with concealed weaponry, designed to lure submarines into making surface attacks.

plural of Q quotient

A technique by which a laser can be made to produce a pulsed output beam, with much higher power in each pulse than would be produced when operating as a continuous wave.

present participle of Q-switch