'Fluorescent' definitions:

Definition of 'fluorescent'

From: WordNet
adjective
Emitting light during exposure to radiation from an external source
adjective
Brilliantly colored and apparently giving off light; "fluorescent colors"
noun
A lighting fixture that uses a fluorescent lamp [syn: fluorescent, fluorescent fixture]

Definition of 'Fluorescent'

From: GCIDE
  • Fluorescent \Flu`o*res"cent\, a. Having the property of fluorescence. [1913 Webster]