'Luminescent' definitions:
Definition of 'luminescent'
(from WordNet)
adjective
Emitting light not caused by heat
Definition of 'Luminescent'
From: GCIDE
- Luminescent \Lu`mi*nes"cent\, a. [L. luminare to illuminate + -escent.] (Physics) Shining with a light due to any of the various causes which produce luminescence. [Webster 1913 Suppl.]