green flash


noun

a green coloration of the upper portion of the sun, caused by atmospheric refraction and occasionally seen as the sun rises above or sinks below the horizon.

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Origin of green flash

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for green flash

green flash

noun

astronomy a flash of bright green light sometimes seen as the sun passes below the horizon, caused by a combination of the dispersion, scattering, and refraction of light
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012