Luminescence Definition

lo͝omə-nĕsəns
noun
Any giving off of light caused by the absorption of radiant or corpuscular energy and not by incandescence; any cold light; specif., fluorescence or phosphorescence occurring in various chemical, biological, electrical, etc. processes at relatively low temperatures.
Webster's New World
The light so emitted.
American Heritage Medicine
Synonyms:

Other Word Forms of Luminescence

Noun

Singular:
luminescence
Plural:
luminescences

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luminescence