Word: 祖冲之 (zǔchōngzhī) Traditional: 祖沖之 祖冲之 dictionary entry zǔchōngzhī Zu Chongzhi (429-500), astronomer and mathematician Full dictionary entry for 祖冲之 Example sentences using 祖冲之 2 sentences, showing page 1 of 1. 祖冲之把圆周率算得非常准确。 Zǔchōngzhī bǎ yuánzhōulǜ suàn dé fēicháng zhǔnquè. Zu Chongzhi calculated pi with great accuracy. 课本里介绍了祖冲之。 Kèběn lǐ jièshàole zǔchōngzhī. The textbook has an introduction to Zu Chongzhi.