[loo-muh-nes-uh ns] /ˌlu məˈnɛs əns/
the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies.
the light produced by such an emission.
1889, from luminescence + -ent.
1884, from Latin lumen (genitive luminis) “light” (see luminous) + -escence.
Fluorescence and Phosphorescence — Prof. E. Wiedmann has made a new study of these phenomena. He proposes the general name luminescence for evolutions of light which do not depend on the temperature of the substance concerned. [“Photographic News,” April 20, 1888]
luminescence lu·mi·nes·cence (lōō’mə-něs’əns)
[loo-muh-niz-uh m] /ˈlu məˌnɪz əm/ noun 1. a style of landscape painting practiced by some mid-19th-century American artists, especially of the Hudson River School, that emphasized meticulously crafted realism and a technically precise rendering of atmosphere and of the effects produced by direct and reflected light.
[loo-muh-nif-er-uh s] /ˌlu məˈnɪf ər əs/ adjective 1. producing light: the luminiferous properties of a gas. luminiferous lu·mi·nif·er·ous (lōō’mə-nĭf’ər-əs) adj. Generating, yielding, or transmitting light.
[loo-muh-nuh-fawr, -fohr] /ˈlu mə nəˌfɔr, -ˌfoʊr/ noun, Physics, Chemistry. 1. a molecule or group of molecules that emits light when illuminated. luminophore lu·mi·no·phore (lōō’mə-nə-fôr’) n. An atom or atomic grouping that when present in an organic compound increases the ability of the compound to luminesce.
[loo-muh-nos-i-tee] /ˌlu məˈnɒs ɪ ti/ noun, plural luminosities. 1. (def 2). 2. the quality of being intellectually brilliant, enlightened, inspired, etc.: The luminosity of his poetry is unequaled. 3. something . 4. Astronomy. the brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic […]