"" (U+229F)

Name SQUARED MINUS
Unicode Versin1.1
Plane(面)基本多言語面 (Basic Multilingual Plane)
Block(ブロック)数学記号 (Mathematical Operators)
ScriptCommon (Zyyy)
CategoryMath_Symbol (Sm)
HTML Entity
⊟
⊟
UTF-8 Encoding e28a9f
UTF-16 Encoding 229f
UTF-32 Encoding 0000229f
⊞ U+229E
⊠ U+22A0