祖沖之 Save Sign in to save words Simplified: 祖冲之 zǔchōngzhī ㄗㄨˇ ㄔㄨㄥ ㄓ Zu Chongzhi (429-500), astronomer and mathematician Character by character 祖(zǔ)surname Zu 沖(chōng)dash against 之(zhī)(possessive particle, literary equivalent of 的 de) A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0