| 1 | 牙齿 | 牙齒 | yá chǐ | ya2 chi3 | tooth; dental; Classifiers: 颗 | | |
| 2 | 齿 | 齒 | chǐ | chi3 | tooth; Classifiers: 颗 | | |
| 3 | 咬人的狗不露齿 | 咬人的狗不露齒 | yǎo rén de gǒu bù lòu chǐ | yao3 ren2 de5 gou3 bu4 lou4 chi3 | lit. the dog that bites doesn't show its teeth (idiom); fig. the most sinister of people can look quite harmless | | |
| 4 | 槽齿类 | 槽齒類 | cáo chǐ lèi | cao2 chi3 lei4 | thecodont (type of reptile that existed in the Permian and Triassic Periods) | | |
| 5 | 槽齿目 | 槽齒目 | cáo chǐ mù | cao2 chi3 mu4 | Thecodontia (obsolete taxonomic grouping of reptiles) | | |
| 6 | 齿根 | 齒根 | chǐ gēn | chi3 gen1 | root of tooth | | |
| 7 | 齿轮 | 齒輪 | chǐ lún | chi3 lun2 | (machine) gear; pinion (gear wheel) | | |
| 8 | 齿列矫正器 | 齒列矯正器 | chǐ liè jiǎo zhèng qì | chi3 lie4 jiao3 zheng4 qi4 | see 牙齿矫正器 | | |
| 9 | 齿列矫正 | 齒列矯正 | chǐ liè jiǎo zhèng | chi3 lie4 jiao3 zheng4 | orthodontic treatment; orthodontics | | |
| 10 | 齿孔 | 齒孔 | chǐ kǒng | chi3 kong3 | perforations (on a postage stamp) | | |
| 11 | 齿鲸 | 齒鯨 | chǐ jīng | chi3 jing1 | toothed whales; Odontoceti | | |
| 12 | 齿颊生香 | 齒頰生香 | chǐ jiá shēng xiāng | chi3 jia2 sheng1 xiang1 | lit. to feel the taste in one's mouth (idiom); fig. to water at the mouth; to drool in anticipation | | |
| 13 | 齿嵴 | 齒嵴 | chǐ jǐ | chi3 ji3 | alveolar ridge | | |
| 14 | 锥齿轮 | 錐齒輪 | zhuī chǐ lún | zhui1 chi3 lun2 | pinion gear | | |
| 15 | 齿冠 | 齒冠 | chǐ guān | chi3 guan1 | crown of tooth | | |
| 16 | 齿更 | 齒更 | chǐ gēng | chi3 geng1 | dental transition (from milk teeth to adult teeth) | | |
| 17 | 哀哭切齿 | 哀哭切齒 | āi kū qiè chǐ | ai1 ku1 qie4 chi3 | weeping and gnashing one's teeth (idiom) | | |
| 18 | 齿颚矫正学 | 齒顎矯正學 | chǐ è jiǎo zhèng xué | chi3 e4 jiao3 zheng4 xue2 | orthodontics | | |
| 19 | 齿蠹 | 齒蠹 | chǐ dù | chi3 du4 | tooth decay | | |
| 20 | 齿唇音 | 齒唇音 | chǐ chún yīn | chi3 chun2 yin1 | see 唇齿音 | | |
| 21 | 差动齿轮 | 差動齒輪 | chā dòng chǐ lún | cha1 dong4 chi3 lun2 | differential gear | | |
| 22 | 不足挂齿 | 不足掛齒 | bù zú guà chǐ | bu4 zu2 gua4 chi3 | not worth mentioning (idiom) | | |
| 23 | 不足齿数 | 不足齒數 | bù zú chǐ shù | bu4 zu2 chi3 shu4 | not worth mentioning; not worth considering | | |
| 24 | 不齿 | 不齒 | bù chǐ | bu4 chi3 | to despise; to hold in contempt | | |
| 25 | 贝齿 | 貝齒 | bèi chǐ | bei4 chi3 | pearly white teeth; cowry | | |