
A luminophor is an atom or atomic grouping in a chemical compound that manifests luminescence. There exist organic and inorganic luminophores. Luminophores can be divided into two subcategories: fluorophores and phosphors. The difference between these two subcategories is derived from the nature of the excited state responsible for the emission of...
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http://en.wikipedia.org/wiki/Luminophore

An atom or atomic grouping in an organic compound that increases its ability to emit light. ... Origin: L. Lumen, light, + G. Phoros, bearing ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: lū′mi-nō-fōr′ Definitions: 1. An atom or atomic grouping in an organic compound that increases its ability to emit light.
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http://www.medilexicon.com/medicaldictionary.php?t=51464

luminophore 1. A luminescent material that emits radiation by absorbing and then converting a portion of incident energy. 2. An atom or atomic grouping in an organic compound that increases its ability to emit light. Etymologically related 'light, shine, glow' word families: ethero-; fulg-; ...
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http://www.wordinfo.info/words/index/info/view_unit/1212/4

a molecule or group of molecules that emits light when illuminated.
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https://www.infoplease.com/dictionary/luminophore
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