Squared Minus Symbol

A symbol from the Math Symbols collection. Click the symbol or the button below to copy.

Math Symbols collection

Symbol: ⊟
Unicode: U+229F
HTML entity: ⊟
Category: Math Symbols

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80 of 96 in the math symbols collection

About the squared minus symbol

The squared minus symbol ⊟ combines a minus sign inside a square outline, representing a binary operation in mathematics that subtracts one element from another within a defined set or structure. It is occasionally used in abstract algebra or logic contexts, particularly in textbooks and papers that discuss group operations or set-theoretic differences.

This character appears mainly in mathematical typesetting, such as in LaTeX documents or online equation editors, where it serves as a compact notation for subtraction-like operations that are distinct from the ordinary minus sign. It is not commonly encountered outside specialized mathematical or technical writing.

How to type Squared Minus

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

In Word / Outlook: type 229F then press Alt + X.
Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 229F.
Or: Control + Command + Space opens the Character Viewer — search by name.