See also: [U+7530 CJK UNIFIED IDEOGRAPH-7530] and 𐌎 [U+1030E OLD ITALIC LETTER ESH]

U+229E, ⊞
SQUARED PLUS

[U+229D]
Mathematical Operators
[U+229F]

Translingual

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Etymology

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Compare , , and .

Symbol

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  1. (mathematics) Generic symbol for an addition-like operation, to distinguish it from addition denoted with +.
  2. (functional analysis) Free additive convolution.
  3. (computing) Unofficial symbol for the Windows Key because of its resemblance to the Windows logo, and is nearly identical to the Windows 11 logo.
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