electric arc

American  

noun

1. arc.

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electric arc Scientific  

1. An electric current, often strong, brief, and luminous, in which electrons jump across a gap. Electric arcs across specially designed electrodes can produce very high heats and bright light, and are used for such purposes as welding and illumination in spotlights. Unwanted arcs in electrical circuits can cause fires. Lightning is a case of an electric arc between one cloud and the earth or another cloud, as are sparks caused by discharges of static electricity.

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Etymology

Origin of electric arc

First recorded in 1880–85

Example Sentences

Tata Steel is working with the National Grid to upgrade electrical infrastructure and support the new electric arc furnace.

From BBC • Jun. 7, 2026

The government's steel measures were announced by Business Secretary Peter Kyle in Port Talbot, in Wales, where steel maker Tata is building an electric arc furnace which will make steel by melting scrap metal.

From BBC • Mar. 18, 2026

The loss was driven by the tariff costs and lower shipments of steel, as well as the company’s accelerated transition toward making its steel using electric arc furnaces, Algoma said.

From The Wall Street Journal • Mar. 11, 2026

That said, a shift to electric arc furnace production sets BlueScope’s business there “up for sustained success,” say Wilson and Reilly.

From The Wall Street Journal • Dec. 2, 2025

There is no hotter object that we can obtain than that of the electric arc.

From Scientific American Supplement, No. 648, June 2, 1888. by Various