冲积扇 chōngjīshàn alluvial fan Definitions Defs Origin Strokes Stroke Words Sentences Sents 冲积 沖積 chōngjī alluviate; alluviation to wash down and deposit sand, gravel, or soil in low-lying areas via water flow; the process or result of such deposition扇 shàn noun fan an implement or device used to create a breeze, such as a hand fan or electric fan