Radical 116
Radical 116 or radical cave meaning "cave" is one of the 23 Kangxi radicals composed of 5 strokes.
In the Kangxi Dictionary, there are 298 characters to be found under this radical.
穴 is also the 117th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China.
Variant forms
This radical character takes different forms in different languages. In the Kangxi Dictionary, the first stroke is a vertical dot, and the last stroke of the radical character starts with a short horizontal line when appearing independently, and becomes a vertical-curve-horizontal stroke ㇄ when used as an upper component, with an exception of 空 in which the radical's last stroke starts with a short horizontal line. In Japanese and Korean hanja, when used as an upper component, the last stroke of the radical character is a vertical-curve-hook stroke ㇟. In Traditional Chinese used in Taiwan and Hong Kong, its last stroke is a vertical-curve-horizontal stroke ㇄. In Mainland China's xin zixing, it is a rightward dot.| Traditional Chinese | Simplified Chinese | Japanese | Korean |
| 穴 空 | 穴 空 | 穴 空 | 穴 空 |