1. shining or glowing at night; luminous in darkness
Usage: often used in scientific or poetic contexts
2. relating to or denoting thin, wispy clouds that form at very high altitudes and reflect sunlight after sunset
Usage: meteorology; technical term

Examples

• The noctilucent clouds shimmered silver against the twilight sky.
• Astronomers observed noctilucent phenomena in the upper atmosphere.
• The jellyfish's noctilucent properties made it visible in the deep ocean.
• Noctilucent clouds are best seen during summer months at high latitudes.
• The rare noctilucent display lasted for several minutes after sunset.
• Scientists study noctilucent clouds to understand atmospheric conditions.