burn-in

burn-in ▶noun damage to a computer or television screen, caused by being left on too long. • a reliability test in which a device is switched on for a long time.

burn-in

burn-in ▶noun 1 [ mass noun ] damage to a computer or television screen which occurs when a very bright image has been displayed for too long. 2 a continuous period of operation undergone by an electronic device in order to check for defects.