Definition of luminescence
: the low-temperature emission of light (as by a chemical or physiological process); also : light produced by luminescence
luminescentplay \ˌlü-mə-ˈne-sənt\ adjective
Examples of luminescence in a Sentence
the luminescence of the watch
we could see inside the cave even without a flashlight because of the luminescence coming from some of the fungus on the walls
Recent Examples of luminescence from the Web
Before the race, Musco checks light levels by mounting a luminescence meter to a pace car and driving the course.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'luminescence'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of luminescence
International Scientific Vocabulary lumin- + -escence
First Known Use: 1889See Words from the same year
LUMINESCENCE Defined for English Language Learners
Definition of luminescence for English Language Learners
: the creation of light by processes that do not involve heat; also : the light created
Medical Definition of luminescence
: the low-temperature emission of light produced especially by physiological processes (as in the firefly), by chemical action, by friction, or by electrical action; also : light produced by luminescence
luminesce\-ˈnes\play intransitive verb
Seen and Heard
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