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.
Origin of green flash
First recorded in 1910–15
Words nearby green flash
green dragon,
green earth,
green fingers,
green fish,
green flag,
green flash,
green footprint,
green gentian,
green gland,
green glass,
green goddess
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