U+2255 "≕" Equals Colon Unicode Character
Unicode Version 17.0
≕
U+2255 "≕" Equals Colon is a mathematical symbol that represents the relationship of equality in a specific, often definitional, context. Unlike the standard equals sign (=), this symbol combines an equals sign with a colon, where the colon typically indicates that the following expression is defined as equal to the preceding one. It is commonly used in mathematical notation to denote that a term is defined to be equal to another, serving as a clear and concise way to introduce new variables or constants in equations and formal proofs.
General Properties
| Code Point | U+2255 |
| Version Added | 1.1 |
| Name | Equals Colon |
| Unicode 1.0 Name | Equal Colon |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "≔" U+2254 Colon Equals |
Encodings
| HTML Decimal Encoding | ≕ |
| HTML Hex Encoding | ≕ |
| UTF-8 Encoding | 0xE2 0x89 0x95 |
| UTF-16 Encoding | 0x2255 |
| UTF-32 Encoding | 0x00002255 |
| C/C++/Java Escape | \u2255 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |