luminous

adj

1. Emitting light; glowing brightly; shining.

   “The moon, which had been slowly ascending, now shone through an open space between the trees; and the rippling waters of the brook gave back her light in luminous vibrations.”

   “The bonfire in his heart made luminous the rose-tan in his cheek.”

   “When approaching the Laughead household, she claimed to have previously met Charles Laughead and to recently have experienced a mystical dream in which a mysterious, luminous man rescued her from a flood (Williams 1954).”

2. Brightly illuminated.
3. Clear; enlightening; easy to understand.

   “a luminous explanation”