- 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.
Origin of arc light
An Americanism dating back to 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for arc light
Anyway, look the man over when he passes under the arc-light.Nan of Music Mountain
Frank H. Spearman
It is visible at some hour every clear night, and has been called the arc-light of the sky.A Field Book of the Stars
William Tyler Olcott
His face was well lighted by the arc-light under the arch of the door.The Landloper
Even the arc-light that Foucault produced in 1844 was not utilized then.Invention
Bradley A. Fiske
Under the blue white of the arc-light, her face was that of a dead woman.The Shooting of Dan McGrew, A Novel
- 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