- a light source in which an arc between two electrodes, usually carbon, produces intense white illumination
Also called: arc lamp
WordReference Random House Unabridged Dictionary of American English © 2019
- Cinema, ElectricityAlso, arc′ lamp′. a lamp in which the light source is a high-intensity electric arc either between carbon rods in air or between metal electrodes in a xenon gas atmosphere enclosed in a quartz bulb.
- Cinema, Electricitythe light produced by such a lamp. Cf. carbon arc, xenon arc.
- 1875–80, American.