切线 Save Sign in to save words Traditional (Taiwan): 切線 qiēxiàn ㄑㄧㄝ ㄒㄧㄢˋ tangent line (geometry) Character by character 切(qiē)cut 线(xiàn)thread Other words read qiēxiàn qiexian with other tones 窃嫌 Often confused with qiexian 切向 A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0