| 1 | 凹 | 凹 | āo | ao1 | depressed; sunken; indented; concave; female (connector etc) | | |
| 2 | 胃小凹 | 胃小凹 | wèi xiǎo āo | wei4 xiao3 ao1 | (physiology) gastric pits | | |
| 3 | 凹入 | 凹入 | āo rù | ao1 ru4 | recessed; concave | | |
| 4 | 凹造型 | 凹造型 | āo zào xíng | ao1 zao4 xing2 | (coll.) to strike a pose | | |
| 5 | 凹线 | 凹線 | āo xiàn | ao1 xian4 | to cave in; hollow; sunken; depressed; groove | | |
| 6 | 凹纹 | 凹紋 | āo wén | ao1 wen2 | die (printing, metalwork etc) | | |
| 7 | 中央凹 | 中央凹 | zhōng yāng āo | zhong1 yang1 ao1 | fovea centralis (depression in the macula retina, most sensitive optic region) | | |
| 8 | 凹凸印刷 | 凹凸印刷 | āo tū yìn shuā | ao1 tu1 yin4 shua1 | embossing; die stamping | | |
| 9 | 凹凸轧花 | 凹凸軋花 | āo tū yà huā | ao1 tu1 ya4 hua1 | embossing | | |
| 10 | 凹凸性 | 凹凸性 | āo tū xìng | ao1 tu1 xing4 | concavity (math.) | | |
| 11 | 凹凸形 | 凹凸形 | āo tū xíng | ao1 tu1 xing2 | crenelated; corrugated | | |
| 12 | 凹凸不平 | 凹凸不平 | āo tū bù píng | ao1 tu1 bu4 ping2 | uneven (surface); bumpy (road) | | |
| 13 | 凹凸 | 凹凸 | āo tū | ao1 tu1 | concave or convex; bumps and holes; uneven (surface); rugged | | |
| 14 | 凹透镜 | 凹透鏡 | āo tòu jìng | ao1 tou4 jing4 | concave lens | | |
| 15 | 凹朴皮 | 凹朴皮 | āo pò pí | ao1 po4 pi2 | bark of tulip tree (TCM); Cortex Liriodendri | | |
| 16 | 凹面镜 | 凹面鏡 | āo miàn jìng | ao1 mian4 jing4 | concave mirror | | |
| 17 | 凹坑 | 凹坑 | āo kēng | ao1 keng1 | concave depression; crater | | |
| 18 | 凹镜 | 凹鏡 | āo jìng | ao1 jing4 | concave mirror | | |
| 19 | 凹进 | 凹進 | āo jìn | ao1 jin4 | concave; recessed; dented | | |
| 20 | 凹痕 | 凹痕 | āo hén | ao1 hen2 | dent; indentation; notch; pitting | | |
| 21 | 凹度 | 凹度 | āo dù | ao1 du4 | concavity | | |
| 22 | 凹洞 | 凹洞 | āo dòng | ao1 dong4 | cavity; pit | | |
| 23 | 凹雕 | 凹雕 | āo diāo | ao1 diao1 | to engrave; to carve into | | |
| 24 | 凹槽 | 凹槽 | āo cáo | ao1 cao2 | recess; notch; groove; fillister | | |
| 25 | 凹板 | 凹板 | āo bǎn | ao1 ban3 | intaglio printing plate (or a print made with it); variant of 凹版 | | |