Wordnet 3.0
VERB (1)
1.
to exhibit phosphorescence;
The Collaborative International Dictionary of English v.0.48:
Phosphoresce \Phos`phor*esce"\, v. i. [imp. & p. p.
Phosphoresced; p. pr. & vb. n. Phosphorescing.]
1. To shine as phosphorus; to be phosphorescent; to emit a
phosphoric light. Generally, to emit light at temperatures
too low to excite incandescent radiation.
[1913 Webster + PJC]
2. To emit light after a source of illumination has been
removed; to exhibit phosphorescence.
[PJC]
WordNet (r) 3.0 (2006):
phosphoresce
v 1: to exhibit phosphorescence