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
green flash in American English
a sudden, bright flash of greenish light sometimes visible near the horizon at sunset or sunrise on a clear day, caused by the atmospheric refraction of sunlight
Examples of 'green flash' in a sentence
green flash
At 11:30 a. m. a green flash went off as a signal for the motorized division to move across the Neva in the second wave of attack.