phosphorescence

phos•pho•res•cence n. [uncountable]

Physics, Chemistrythe property of giving off light at temperatures below burning, as after exposure to light or other radiation.

phos•pho•res•cent, adj.

phos•pho•res•cence n.

Physics, Chemistrythe property of being luminous at temperatures below incandescence, as from slow oxidation in the case of phosphorus or after exposure to light or other radiation.
Physics, Chemistrya luminous appearance resulting from this.
Physics, Chemistryany luminous radiation emitted from a substance after the removal of the exciting agent.

Collins Concise English Dictionary © HarperCollins Publishers::

phosphorescence /ˌfɒsfəˈrɛsəns/ n

a fluorescence that persists after the bombarding radiation producing it has stopped
the light emitted in phosphorescence
the emission of light during a chemical reaction, such as bioluminescence, in which insufficient heat is evolved to cause fluorescence Compare fluorescence

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