正交群 Save Sign in to save words zhèngjiāoqún ㄓㄥˋ ㄐㄧㄠ ㄑㄩㄣˊ orthogonal group (math.) Character by character 正(zhèng)straight 交(jiāo)hand over 群(qún)group A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0