What does bioluminescene mean?
It is the emission of light occurring at a temperature which is
below that of the incandescent bodies. Luminescence includes
phosphorescence and fluorescence.
I should have added that I only know this through my study of
botany. It is seen in both plants and insects. The property of a
plant in which this may occurr is of a substance's ability within
the plant to transform radiation so as to emit rays of a different
wavelength or "color". Certain insects such as a firefly for
example can give out light without burning or burning so slowly
that heat is not given off from the light.