SINCE 1828
self-luminous
adjective
self-lu·mi·nous
| \ ˌself-ˈlü-mə-nəs
\
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Definition of self-luminous
: generating and emitting its own visible light
… Venus … is not self-luminous but lit by the sun …— Derek J. deSolla Price Radium paint is actually self-luminous—when freshly applied, it requires no external energy source …— Jack Forster
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