擴散 kuòsàn HSK7 to spread Origin Definitions Defs Strokes Stroke Words Sentences Sents kuòsàn to spread 扩 擴 kuò verb to enlarge (bound form) to expand, enlarge, or extend; to spread out散 sàn verb to distribute to distribute; to disseminate; to spreadkuòsàn diffusion 扩 擴 kuò verb to enlarge (bound form) to expand, enlarge, or extend; to spread out散 sàn verb to disperse to break up; to disperse; to come to an end