Union Symbol (∪)

The union symbol is ∪. ∪ is U+222A UNION. In set notation, A ∪ B contains elements that belong to A, B, or both. For Union Symbol, ∪ is encoded as U+222A, and its Unicode name is UNION. Use ∪ in contexts such as Equations, Proofs, Technical documents, Math education. For Union Symbol, the surrounding words should make the intended meaning clear. You can use Union Symbol in forms such as A ∪ B; A ∪ B ∪ C; x ∈ A ∪ B; A ∪ ∅ = A. Check the pasted result in the final font and application. Avoid these common Union Symbol problems: Using ∪ for set intersection; intersection is ∩; Reading union as exclusive “either/or.”; Omitting braces or set definitions where needed. Union Symbol display and accessibility checks include the following: Place ∪ between set expressions; Define the sets before using the operator; Use ∩ for intersection and ∪ for union. Union Symbol on Windows: In Microsoft Word, type 222A and press Alt+X. In other Windows apps, use Character Map or copy ∪ from this page. Union Symbol on Mac: Open Character Viewer with Control+Command+Space and search for “union.” Union Symbol on iPhone: Use the Copy button to copy ∪, then paste it into the target app. Save a text-replacement shortcut only if the exact sequence is preserved.