⊝

Math Operator 154

Unicode
U+229D
Category
Math
HTML Entity
⊝
CSS
\229D
The Circled Minus symbol (⊝) features a standard minus sign enclosed within a circle. In mathematics, it is primarily used as an operator in set theory to denote symmetric difference, or in abstract algebra to define custom binary operations. Outside of complex equations, it occasionally appears in technical diagrams to indicate negative electrical polarity or as a stylized subtraction icon.

How to Type

Windows
Type 229D then press Alt+X (in Microsoft Word), or press Win + . and search "minus"
macOS
Control + Command + Space, then search "circled minus"
Linux
Ctrl+Shift+U 229D Space
HTML
⊖

In Programming

In LaTeX, this symbol is generated using the \ominus command to typeset mathematical formulas. While not a native operator in standard programming languages, developers occasionally use it in custom algebraic libraries to represent specialized subtraction or symmetric difference functions.

Read full meaning article

Tags

abstract algebra binary operation circled dash dash in circle electrical symbol mathematics minus minus in circle negation negative polarity negative terminal operator set theory symmetric difference

Related Symbols

± Plus Minus Sign × Multiplication Sign ÷ Division Sign ≠ Not Equal To ≈ Approximately Equal To ∞ Infinity √ Square Root ∑ Summation ∫ Integral π Pi ≤ Less Than or Equal To ≥ Greater Than or Equal To