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flashover

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WordReference Random House Unabridged Dictionary of American English © 2026

flash•o•ver n.

Electricitya disruptive discharge around or over the surface of a solid or liquid insulator.
Physicsthe moment of conflagration or complete incineration caused by superheated air or combustibles.

v.i.

Electricityto have or experience a flashover.

origin, originally noun, nominal use of verb, verbal phrase flash over 1890–95

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