luminous
adj.shining in the dark or giving off a soft, bright light. You use this to describe things that glow or look very clear and glowing.
adj.emitting or reflecting light; glowing or shining. Often used to describe objects that are visible in the dark or have a radiant, clear quality.
“The watch has luminous hands so you can see the time at night.”
“The deep-sea fish used luminous organs to attract prey in the pitch-black water.”
“The artist was famous for her luminous landscapes, which seemed to capture the exact moment the sun broke through the morning mist.”
Often used both literally for light-emitting objects and figuratively to describe skin, eyes, or prose.
“The difficulty is that large, luminous stars dominate the light, while smaller stars are far dimmer and much harder to identify.”
Borrowed from Middle French lumineus, from Latin lūminōsus.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.