| 1 | 线 | 線 | xiàn | xian4 | thread; string; wire; line; Classifiers: 条 ,股 ,根 ; (after a number) tier (unofficial ranking of a Chinese city); variant of 线 | | |
| 2 | 线段 | 線段 | xiàn duàn | xian4 duan4 | line segment | | |
| 3 | 线圈 | 線圈 | xiàn quān | xian4 quan1 | solenoid (electrical engineering); coil | | |
| 4 | 线索 | 線索 | xiàn suǒ | xian4 suo3 | trail; clues; thread (of a story) | | |
| 5 | 线条 | 線條 | xiàn tiáo | xian4 tiao2 | line (in drawing, calligraphy etc); the lines or contours of a three-dimensional object (hairstyle, clothing, car etc) | | |
| 6 | 线路 | 線路 | xiàn lù | xian4 lu4 | line; circuit; wire; road; railway track; bus route | | |
| 7 | 线上 | 線上 | xiàn shàng | xian4 shang4 | online | | |
| 8 | 线性 | 線性 | xiàn xìng | xian4 xing4 | linear; linearity | | |
| 9 | 线香 | 線香 | xiàn xiāng | xian4 xiang1 | incense stick | | |
| 10 | 线性空间 | 線性空間 | xiàn xìng kōng jiān | xian4 xing4 kong1 jian1 | vector space; linear space | | |
| 11 | 线性规划 | 線性規劃 | xiàn xìng guī huà | xian4 xing4 gui1 hua4 | linear programming | | |
| 12 | 线下 | 線下 | xiàn xià | xian4 xia4 | offline; below the line | | |
| 13 | 线形图 | 線形圖 | xiàn xíng tú | xian4 xing2 tu2 | line chart | | |
| 14 | 线性波 | 線性波 | xiàn xìng bō | xian4 xing4 bo1 | linear wave | | |
| 15 | 线性代数 | 線性代數 | xiàn xìng dài shù | xian4 xing4 dai4 shu4 | linear algebra | | |
| 16 | 线性方程 | 線性方程 | xiàn xìng fāng chéng | xian4 xing4 fang1 cheng2 | linear equation (math.) | | |
| 17 | 线图 | 線圖 | xiàn tú | xian4 tu2 | line drawing; diagram; line graph | | |
| 18 | 线性回归 | 線性回歸 | xiàn xìng huí guī | xian4 xing4 hui2 gui1 | linear regression (statistics) | | |
| 19 | 线性算子 | 線性算子 | xiàn xìng suàn zi | xian4 xing4 suan4 zi5 | linear operator (math.) | | |
| 20 | 线性图 | 線性圖 | xiàn xìng tú | xian4 xing4 tu2 | line chart | | |
| 21 | 线性系统 | 線性系統 | xiàn xìng xì tǒng | xian4 xing4 xi4 tong3 | linear system | | |
| 22 | 线轴 | 線軸 | xiàn zhóu | xian4 zhou2 | thread spool | | |
| 23 | 线状 | 線狀 | xiàn zhuàng | xian4 zhuang4 | linear | | |
| 24 | 线西乡 | 線西鄉 | xiàn xī xiāng | Xian4 xi1 xiang1 | Hsienhsi township in Changhua county 彰化县 , Taiwan | | |
| 25 | 线西 | 線西 | xiàn xī | Xian4 xi1 | Hsienhsi township in Changhua county 彰化县 , Taiwan | | |