Word: 半径 (bànjìng) Traditional: 半徑 半径 dictionary entry bànjìng radius Full dictionary entry for 半径 Example sentences using 半径 2 sentences, showing page 1 of 1. 圆的直径是半径的两倍。 Yuán de zhíjìng shì bànjìng de liǎngbèi. The diameter of a circle is twice its radius. 这个圆的半径是五厘米。 Zhège yuán de bànjìng shì wǔ límǐ. The radius of this circle is five centimeters.