Definition of flashover
1 : an abnormal electrical discharge (as through the air to the ground from a high potential source or between two conducting portions of a structure)
2 : the sudden spread of flame over an area when it becomes heated to the flash point
Explore M-W
1892
First Known Use of flashover
1892
Learn More about flashover
Seen and Heard
What made you want to look up flashover? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!