blue jet
noun
a faint discharge of blue light from the top of a thunderstorm cloud that propagates upward: extends approximately from the bottom to the top of the stratosphere and is not detectable from the ground.
Nearby words
blue in the face, blue island, blue jasmine, blue jay, blue jeans, blue jet, blue john, blue law, blue laws, blue lias, blue line
Origin of blue jet
1990–95
Also called reverse lightning.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for blue jet
blue jet
A conical discharge of blue light that starts from the top of active thunderstorm clouds and proceeds upward. Blue jets can last up to several hundred milliseconds and are believed to connect the top of a thundercloud with the ionosphere.
The American Heritage® Science Dictionary
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