luminous energy luminous • luminous flux · · · Info · Definitions · Characters · · luminous energy · · Text Common · · Latin · · Scripts 15 · · Length 6 · · Syllables Definitions · · · (noun) the energy associated with visible light. Synonyms: luminous energy. · · Noun Definition 1 Characters · · space U+0020 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 y latin small letter y U+0079