張衡 Save Sign in to save words Simplified: 张衡 zhānghéng ㄓㄤ ㄏㄥˊ Zhang Heng (78-139) great Han dynasty astronomer and mathematician Character by character 張(zhāng)surname Zhang 衡(héng)weigh A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0