noctilucent means shining or glowing at night, especially of very high-altitude clouds that reflect sunlight long after sunset; nightshining.
Why “noctilucent” is a great word
Shining or glowing at night, especially of very high-altitude clouds that catch and reflect sunlight long after sunset. Formed within English from the Latin roots nocti- (from nox, 'night') and lucent (from lucēre, 'to shine'), first recorded in 1885–90. Unlike 'luminous' (which denotes a steady, intrinsic emission, untethered to time) or 'nocturnal' (which describes activity in darkness without implying radiance), noctilucent carries the specific magic of borrowed light—a lingering gleam where none should be. It is the electric-blue shimmer of clouds eighty kilometers high, still catching the sun while the land surrenders to shadow; the ghost-ship phosphorescence on a black sea; the cold gleam of a watch dial in a darkened room—each a quiet defiance of the expected darkness, a reminder that light persists in the most improbable places.
adj
- Shining or glowing at night, especially of very high-altitude clouds that reflect sunlight long after sunset; nightshining.