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See also: ◊ [U+25CA LOZENGE], ⬨ [U+2B28 WHITE MEDIUM LOZENGE], and ⬫ [U+2B2B WHITE SMALL LOZENGE]

⋄ U+22C4, ⋄ DIAMOND OPERATOR ← ⋃ [U+22C3] Mathematical Operators ⋅ → [U+22C5]

Translingual

Symbol

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1. (mathematics) diamond operator