Noun | 1. | ![]() cardiac monitor, heart monitor - a piece of electronic equipment for continual observation of the function of the heart cathode-ray tube, CRT - a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen electronic equipment - equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor) monitoring device, monitor - display produced by a device that takes signals and displays them on a television screen or a computer monitor microwave radar, radar, radio detection and ranging, radiolocation - measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects |