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autoluminescence
autoluminescence n. 
/ˌɑdoʊˌluməˈnɛs(ə)ns/ the spontaneous emission of light by a substance at room temperature.
Brit. /ˌɔːtə(ʊ)ˌl(j)uːmᵻˈnɛsns/
, /ˌɔːtə(ʊ)ˌl(j)uːmᵻˈnɛsns/U.S. /ˌɔdoʊˌluməˈnɛs(ə)ns/
, /ˌɔdoʊˌluməˈnɛs(ə)ns//ˌɑdoʊˌluməˈnɛs(ə)ns/ΘΚΠ
the world > matter > physics > atomic nucleus > radioactivity > spontaneous emission of light > [noun]
autoluminescence1904
1904 Sci. Amer. 7 May 366/1 Prof. Barker showed a number of photographs which had been developed by the autoluminescence of the minerals which he exhibited.
1938 R. W. Lawson tr. G. von Hevesy & F. A. Paneth Man. Radioactivity (ed. 2) xxiv. 242 The rays from radium, themselves invisible, are able to excite substances to emit visible light... This is most strikingly manifested in the phenomenon of autoluminescence.
2002 Plant Physiol. 129 346/2 The luciferase activity values were in the same range as the background values (i.e. the measured autoluminescence of the luciferine substrate).
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