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reverse lightning

American  

noun

  1. a bright flash of light in the atmosphere caused by an electrical discharge that travels from the ground to a cloud.

reverse lightning Scientific  

  1. A flash of light in the sky caused by an electrical discharge from the Earth's surface to a cloud. Reverse lightning is so called because lightning typically occurs between clouds or travels from a cloud to the Earth's surface.

  2. Also called return stroke

  3. See note at lightning

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.