- an electric arc between two carbon electrodes, used mainly for lighting, as in an arc light for a motion-picture projector, or for intense heating, as in the cutting and welding of metals.
Origin of carbon arc
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for carbon arc
After many experiments with platinum, he abandoned that material in favor of the carbon-arc in vacuo.
- an electric arc produced between two carbon electrodes, formerly used as a light source
- (as modifier)carbon-arc light
- an electric arc produced between a carbon electrode and material to be welded
- (as modifier)carbon-arc welding