萤光粉 yíngguāngfěn fluorescent powder Origin Definitions Defs Strokes Stroke Words Sentences Sents 萤光 螢光 yíngguāng fluorescence Fluorescence; the light emitted by certain substances when exposed to radiation such as ultraviolet light or electrons.粉 fěn noun powder powder; dust; finely ground substance such as flour or medicinal powder