Fourth Root
Part of Math Symbols
Fourth Root 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+221C
About this symbol
The fourth root sign adds a small 4 to the radical √: ∜16 is 2, because 2 × 2 × 2 × 2 = 16. Unicode has the cube and fourth roots as single characters; other roots are written with a raised number in front of √.
Unicode facts
- Official name
- FOURTH ROOT
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Operators
- Added in
- Unicode 1.1 (1993)
- Related
- ؇ Arabic-Indic Fourth Root U+0607
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.