light unit light-treaded • light up · · · Info · Definitions · Characters · · light unit · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a measure of the visible electromagnetic radiation. Synonyms: light unit. · · Noun Definition 1 Characters · · space U+0020 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E t latin small letter t U+0074 u latin small letter u U+0075