一分为二 yīfēnwéi'èr to divide one into two Origin Definitions Defs Strokes Stroke Words Sentences Sents 一 yī numeral one one; the number 1; single; alone分为 分為 fēnwéi verb to divide into to divide something into parts; to subdivide or split into smaller units二 èr numeral two the number two; 2