荧光增白剂 yíngguāngzēngbáijì fluorescent whitening agent Origin Definitions Defs Strokes Stroke Words Sentences Sents 荧光 熒光 yíngguāng noun fluorescence fluorescence; fluorescent light增白剂 增白劑 zēngbáijì whitening agent A chemical substance used to increase the whiteness or brightness of fabrics, fibers, paper, or food; brightener; whitener