arc-lamp

arc light

noun
1.
Also, 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.
2.
the light produced by such a lamp.


Origin:
1875–80, Americanism

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
arc light
 
n
Also called: arc lamp a light source in which an arc between two electrodes, usually carbon, produces intense white illumination

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