Union symbol
Type :union: · Math
Unicode name Union · Mathematical Operators block · added in Unicode 1.1, 1993
What ∪ is for
Everything in either set. The cup-shaped one, which is the standard mnemonic: union is the cup that holds both.
How to type ∪
The shortcuts below are the built-in routes. With
Emoji Anywhere
installed you can skip all of them and type
:union: in any text field instead, which
is the same on every platform.
macOS
No direct shortcut. Use Edit → Emoji & Symbols, or switch to the Unicode Hex
Input source and type 222A with Option
held.
Windows
No Alt code. In Word, type 222A then press Alt +
X. Elsewhere use the emoji panel with Win + Period, or Character Map.
Shortcodes
:union: On the web
HTML ∪
Unicode U+222A
JavaScript '\u{222A}'
CSS "\222A"
Python '\u222A'
URL %E2%88%AA
What ∪ gets mistaken for
The other way up, and the opposite operation. Getting these two backwards is the classic set-theory slip.
More from math
:three_eighths: ⅝ :five_eighths: ⅞ :seven_eighths: ∈ :element_of: ∉ :not_an_element_of: ⊂ :subset_of: ∩ :intersection: ∀ :for_all: ∃ :there_exists: ∅ :empty_set: ¬ :not_negation: ∧ :logical_and: Every symbol and kaomoji is in the full gallery .
Tired of copying ∪ from pages like this one?
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You type
You get
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