U+2254 "≔" Colon Equals Unicode Character
Unicode Version 17.0
≔
U+2254 "≔" Colon Equals is a mathematical symbol that represents the operation of assignment or definition, commonly used in computer science and logic to indicate that a value or expression is being assigned to a variable or that one quantity is defined as equal to another. It visually combines a colon and an equals sign, serving as a distinct alternative to the more common ":=" notation found in programming languages like Pascal or pseudocode. While it frequently appears in mathematical notation and formal proofs to denote a definition, it is less prevalent than other assignment symbols in mainstream programming but remains a precise typographic character for denoting equivalence with a definitional nuance.
General Properties
| Code Point | U+2254 |
| Version Added | 1.1 |
| Name | Colon Equals |
| Unicode 1.0 Name | Colon Equal |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "≕" U+2255 Equals Colon |
Encodings
| HTML Decimal Encoding | ≔ |
| HTML Hex Encoding | ≔ |
| UTF-8 Encoding | 0xE2 0x89 0x94 |
| UTF-16 Encoding | 0x2254 |
| UTF-32 Encoding | 0x00002254 |
| C/C++/Java Escape | \u2254 |
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 |