| 真丝 | zhen1 si1 | pure silk |
| 丝氨酸 | si1 an1 suan1 | serine (Ser), an amino acid |
| 弹丝 | dan4 si1 | elater |
| 丝棉 | si1 mian2 | bombasine |
| 花丝 | hua1 si1 | stalk (filament) of stamen |
| 千丝万缕 | qian1 si1 wan4 lv3 | linked in countless ways |
| 生丝 | sheng1 si1 | raw silk |
| 缫丝 | sao1 si1 | filature |
| 长丝 | chang2 si1 | |
| 丝织 | si1 zhi1 | silk-weave |
| 丝网 | si1 wang3 | silk screen |
| 喷丝头 | pen1 si1 tou2 | spinneret |
| 纤丝 | qian4 si1 | fibrilla |