- Electricity. a disruptive discharge around or over the surface of a solid or liquid insulator.
- the moment of conflagration or complete incineration caused by superheated air or combustibles.
verb (used without object)- Electricity. to have or experience a flashover.
Origin of flashover
First recorded in 1890–95; orig. noun use of verb phrase flash over
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for flashover- an electric discharge over or around the surface of an insulator
- the sudden and rapid spread of fire through the air, caused by the ignition of smoke or fumes from surrounding objects
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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