Chinese symbol for “concave”
凹
āo
concave; depressed; sunken; indented; female (connector etc)
The closest CC-CEDICT match for concave is 凹 (āo), defined as: concave; depressed; sunken; indented; female (connector etc).
Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.
Characters and stroke order
Other Chinese words for “concave”
Related words
Other words that share a character with 凹.
| Word | Pinyin | Meaning |
|---|---|---|
| 凹陷 | āo xiàn | to cave in; hollow; sunken; depressed |
| 凹凸 | āo tū | concave or convex; bumps and holes |
| 凹槽 | āo cáo | recess; notch |
| 凹凸不平 | āo tū bù píng | (idiom) uneven (surface); bumpy (road) |
| 凹版 | āo bǎn | intaglio printing plate (or a print made with it) |
| 凹痕 | āo hén | dent; indentation |
See also: Japanese symbol for “concave”.
Data: CC-CEDICT (CC BY-SA 4.0); Unihan Database (Unicode License v3); Make Me a Hanzi (Arphic Public License (graphics.txt); LGPL-3.0-or-later (dictionary.txt)); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.