开平方法 kāipíngfāngfǎ square root extraction Origin Definitions Defs Strokes Stroke Words Sentences Sents 开 開 kāi verb to start to begin; to start; to set in motion; to initiate (an action, term, or schedule)平方 píngfāng noun square The product of a number multiplied by itself; a square in mathematics; also called 二次幂 èrcìmì or 二次方 èrcìfāng法 fǎ noun method method; way; mode; technique; rule of grammar