圆半径 yuánbànjìng radius Origin Definitions Defs Strokes Stroke Words Sentences Sents 圆 圓 yuán noun circle a circle, being a shape where all points on the edge are the same distance from the center半径 半徑 bànjìng noun radius The distance from the center of a circle or sphere to its outer edge; half of a 直径 zhíjìng