U+3330 "㌰" Square Piko Unicode Character
Unicode Version 17.0
㌰
U+3330 "㌰" Square Piko is a CJK compatibility ideograph used primarily in Japanese typography, where it represents the word "piko," a reading of the metric prefix "pico" meaning one trillionth. This character is part of a larger set of squared katakana abbreviations that were historically employed for compact representation of compound terms in East Asian text, particularly in contexts like old computer encoding or technical documentation. While it allows for a single character to convey the concept of the prefix in a visually distinct square form, its usage today is largely obsolete due to the widespread adoption of standard katakana or Latin script for such units, making it a relic of earlier digital text conventions.
General Properties
| Code Point | U+3330 |
| Version Added | 1.1 |
| Name | Square Piko |
| Unicode 1.0 Name | Squared Piko |
| Block | CJK Compatibility |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Square |
| Decomposition Mapping | "ピ" U+30D4 Katakana Letter Pi "コ" U+30B3 Katakana Letter Ko |
Encodings
| HTML Decimal Encoding | ㌰ |
| HTML Hex Encoding | ㌰ |
| UTF-8 Encoding | 0xE3 0x8C 0xB0 |
| UTF-16 Encoding | 0x3330 |
| UTF-32 Encoding | 0x00003330 |
| C/C++/Java Escape | \u3330 |
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 | "ピ" U+30D4 Katakana Letter Pi "コ" U+30B3 Katakana Letter Ko |
| NFKC Simple Casefold | "ピ" U+30D4 Katakana Letter Pi "コ" U+30B3 Katakana Letter Ko |
| Script | Katakana |
| Script Extensions | Katakana |
| Indic Syllabic Category | Other |
| Vertical Orientation | Transformed Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Katakana |
| Sentence Break | Other |