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arc light

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noun

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.
the light produced by such a lamp.

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Origin of arc light

An Americanism dating back to 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for arc light

arc light

noun

a light source in which an arc between two electrodes, usually carbon, produces intense white illuminationAlso called: arc lamp
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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