U+229F "⊟" Squared Minus Unicode Character

U+229F "⊟" Squared Minus is a mathematical symbol that represents a minus sign enclosed within a square. It is typically used in algebra or logic to denote a specific binary operation, such as the symmetric difference in set theory or a subtraction operation under a particular algebraic structure. This character belongs to the Mathematical Operators block and is distinct from other squared operators like the plus or times, providing a clear visual cue for operations involving subtraction within a defined set or space.