# 凹 U+51F9 CJK UNIFIED IDEOGRAPH-51F9

A Chinese character meaning “concave, hollow, depressed; a pass, valley”, read āo in Mandarin.

| | |
|---|---|
| Character | `凹` |
| Codepoint | U+51F9 |
| Name | CJK UNIFIED IDEOGRAPH-51F9 |
| Block | [CJK Unified Ideographs](https://unicodekit.com/block/cjk-unified-ideographs) |
| Script | Han |
| Category | Other Letter (Lo) |
| Unicode version | 1.1 |
| HTML | `凹` `凹` |
| CSS | `\51F9` |
| JavaScript | `\u51F9` |
| UTF-8 | E5 87 B9 |
| UTF-16 | 51F9 |
| Definition | concave, hollow, depressed; a pass, valley |
| Mandarin | āo |
| Cantonese | aau3 |
| Japanese | OU KUBOMU KUBOMI |
| Korean | YO |

## Related characters

- 凸 [U+51F8 CJK UNIFIED IDEOGRAPH-51F8](https://unicodekit.com/char/51F8)
- 出 [U+51FA CJK UNIFIED IDEOGRAPH-51FA](https://unicodekit.com/char/51FA)
- 凷 [U+51F7 CJK UNIFIED IDEOGRAPH-51F7](https://unicodekit.com/char/51F7)
- 击 [U+51FB CJK UNIFIED IDEOGRAPH-51FB](https://unicodekit.com/char/51FB)
- 凶 [U+51F6 CJK UNIFIED IDEOGRAPH-51F6](https://unicodekit.com/char/51F6)
- 凼 [U+51FC CJK UNIFIED IDEOGRAPH-51FC](https://unicodekit.com/char/51FC)
- 凵 [U+51F5 CJK UNIFIED IDEOGRAPH-51F5](https://unicodekit.com/char/51F5)
- 函 [U+51FD CJK UNIFIED IDEOGRAPH-51FD](https://unicodekit.com/char/51FD)
- 凴 [U+51F4 CJK UNIFIED IDEOGRAPH-51F4](https://unicodekit.com/char/51F4)
- 凾 [U+51FE CJK UNIFIED IDEOGRAPH-51FE](https://unicodekit.com/char/51FE)
- 凳 [U+51F3 CJK UNIFIED IDEOGRAPH-51F3](https://unicodekit.com/char/51F3)
- 凿 [U+51FF CJK UNIFIED IDEOGRAPH-51FF](https://unicodekit.com/char/51FF)

Page: https://unicodekit.com/char/51F9 · JSON: https://unicodekit.com/characters/51F9