a device for preventing damage to radio, telephonic, or other electric equipment from lightning or other high-voltage currents, using spark gaps to carry the current to the ground without passing through the device.
a device that protects electrical equipment, such as an aerial, from an excessive voltage resulting from a lightning discharge or other accidental electric surge, by discharging it to earth
noun 1. . noun 1. (US & Canadian) another name for the firefly
- Lightning conductor
noun 1. a metal strip terminating in a series of sharp points, attached to the highest part of a building, etc, to discharge the electric field before it can reach a dangerous level and cause a lightning strike
[lahyt-ning] /ˈlaɪt nɪŋ/ noun 1. a brilliant electric spark discharge in the atmosphere, occurring within a thundercloud, between clouds, or between a cloud and the ground. verb (used without object), lightninged, lightning. 2. to emit a flash or flashes of lightning (often used impersonally with it as subject): If it starts to lightning, we’d better […]
noun 1. a rodlike conductor installed to divert lightning away from a structure by providing a direct path to the ground. 2. a person or thing that attracts and absorbs powerful and especially negative or hostile feelings, opinions, etc., thereby diverting such feelings from other targets: The unpopular supervisor served as a lightning rod for […]