Colon Equals
Part of Math Symbols
Colon Equals has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ≔
- Unicode
- U+2254
About this symbol
≔ means “is defined as” or “becomes”. Written as two characters, :=, it is the assignment sign of ALGOL and Pascal, chosen so that x := x + 1 would not be confused with an equation that can never be true.
Unicode facts
- Official name
- COLON EQUALS
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Relations
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.