| Name | CIRCLE WITH LEFT HALF BLACK |
| Unicode Version | 1.1 |
| Block（ブロック） | Geometric Shapes（幾何学模様） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ◐ ◐ |
| UTF-8 Encoding | ◐ e29790 |
| UTF-16 Encoding | ◐ 25d0 |
| UTF-32 Encoding | ◐ 000025d0 |