Luminous /(?)/

Lu·mi·nous

Luminous

a.
  1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color.
    Fire burneth wood, making it . . . luminous.
    The mountains lift . . . their lofty and luminous heads.
  2. Illuminated; full of light; bright; as, many candles made the room luminous.
    Up the staircase moved a luminous space in the darkness.
  3. Enlightened; intelligent; also, clear; intelligible; as, a luminous mind.

Phrases & Compounds
Luminous paint
a paint made up with some phosphorescent substance, as sulphide of calcium, which after exposure to a strong light is luminous in the dark for a time.