1) Emitting light 2) Light 
[adj] - (of living organisms) emitting light
bioluminescence, bioluminescent 1. The emission of light by living organisms; also, the light so produced. 2. Creatures that emit bioluminescent light include: fireflies, glowworms, certain fish, jelly fish, planktons, fungi, and bacteria. Such light occurs when a pigment (usually luciferin) is oxidized without giving off heat. Although it is bel...
adjective (of living organisms) emitting light; `fireflies are bioluminescent`
Refers to organisms that emit light under certain conditions.