reflectance reflect • reflected · · · Info · Definitions · Synonyms · Characters · · reflectance · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the fraction of radiant energy that is reflected from a surface. Synonyms: coefficient of reflection, reflection factor, reflectivity. · · Noun Definition 1 Synonyms · · · coefficient of reflection · · Synonym 1 reflection factor · · Synonym 2 reflectivity · · Synonym 3 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074