U+33DB "㏛" Square Sr Unicode Character
U+33DB "㏛" Square Sr is a precomposed CJK compatibility ideograph used primarily in East Asian text processing to represent a square unit of area known as a "square sen" or "square si," where "sr" stands for "stère," a metric unit equal to one cubic meter. This character is part of the CJK Compatibility block, which contains symbols that were originally included to maintain round-trip compatibility with older character sets and legacy encoding systems. It appears as a single glyph enclosing the Latin letters "S" and "r" within a square boundary, allowing for compact representation in contexts like technical documentation or unit measurements. Its use is largely historical and specific to compatibility needs rather than modern standard practice.
General Properties
| Code Point | U+33DB |
| Version Added | 1.1 |
| Name | Square Sr |
| Unicode 1.0 Name | Squared Sr |
| Block | CJK Compatibility |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Square |
| Decomposition Mapping | "s" U+0073 Latin Small Letter S "r" U+0072 Latin Small Letter R |
Encodings
| HTML Decimal Encoding | ㏛ |
| HTML Hex Encoding | ㏛ |
| UTF-8 Encoding | 0xE3 0x8F 0x9B |
| UTF-16 Encoding | 0x33DB |
| UTF-32 Encoding | 0x000033DB |
| C/C++/Java Escape | \u33db |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "s" U+0073 Latin Small Letter S "r" U+0072 Latin Small Letter R |
| NFKC Simple Casefold | "s" U+0073 Latin Small Letter S "r" U+0072 Latin Small Letter R |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |