| 蜥 | [ xī ] see 蜥蜴[xi1 yi4] |
| 蜥形綱 | [ xī xíng gāng ] Sauropsida, class within Chordata containing reptiles |
| 蜥形纲 | [ xī xíng gāng ] Sauropsida, class within Chordata containing reptiles |
| 蜥易 | [ xī yì ] variant of 蜥蜴[xi1 yi4], lizard |
| 蜥臀目 | [ xī tún mù ] Saurischia or lizard-hipped dinosaurs, order within superorder Dinosauria |
| 蜥蜴 | [ xī yì ] lizard |
| ⇒ 巨蜥 | [ jù xī ] monitor lizards (family Varanidae) |
| ⇒ 火蜥蜴 | [ huǒ xī yì ] fire lizard, fire-bellied salamander (Cynops orientalis David) |
| ⇒ 草原巨蜥 | [ caǒ yuán jù xī ] Savannah monitor (Varanus exanthematicus) |
| ⇒ 虺蜥 | [ huǐ xī ] venomous snake, fig. vicious person |
| ⇒ 鬣蜥 | [ liè xī ] iguana |
| ⇒ 鱷蜥 | [ è xī ] Chinese crocodile lizard (Shinisaurus crocodilurus) |
| ⇒ 鳄蜥 | [ è xī ] Chinese crocodile lizard (Shinisaurus crocodilurus) |