fluorescein
/ˌflʊəˈresɪɪn/noun
mass noun
1- Chemistry an orange dye with a yellowish-green fluorescence, used as an indicator and tracer【化】荧光素, 荧光黄。
1.1
- A derivative of resorcinol and phthalic anhydride; chem. formula: C20H12O5.雷琐辛（间苯二酚）和邻苯二甲酸酐的一种衍生物; 化学分子式： C20H12O5.
词源
late 19th cent.: from FLUORESCENCE + -IN1.