Contains As Member Symbol
∋ means that something is an element of a set or collection.
U+220B
The symbol ∋ is commonly used to express membership in mathematics and logic. It reads as “contains as member” or “is a member of.” It’s useful for writing set relationships clearly in text or code.
Contains As Member Symbol Meaning
∋ (U+220B, named “CONTAINS AS MEMBER”) indicates membership: it is used when an expression says that an element belongs to a set or collection. In set notation, “x ∈ A” means “x is an element of A,” while “A ∋ x” conveys the same relationship in the opposite direction (“A contains x as a member”). This symbol also appears in logic and formal writing where authors emphasize whether something is included within a domain, class, or collection.
Common uses
- •Writing set membership relationships in math notes (e.g., “A ∋ x” form).
- •Clarifying logic statements about elements belonging to a collection.
- •Labeling diagram annotations for sets and their contained elements.
- •Creating captions in educational materials about membership and inclusion.
- •Using the symbol in plain-text or typeset documents where set notation is needed.
Examples
∋ Contains as member
- ∋A ∋ x
- ∋S ∋ element1
- ∋Group ∋ member
- ∋Ω ∋ ω
- ∋B ∋ 3
Variations
Ready to copy
Technical codes
| Unicode | U+220B | |
| HTML Entity | ∋ | |
| HTML Code | ∋ | |
| CSS | \220B | |
| Alt Code | Alt + 8715 | |
| Decimal | 8715 |
How to type Contains As Member Symbol (∋)
On Windows
Hold Alt and type 8715 on the numeric keypad. In Word, type 220B then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 220B. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 220b, then press Enter or Space.
Anywhere
Copy ∋ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does ∋ mean?
∋ means “contains as member,” expressing that a set or collection contains an element.
How is ∋ different from ∈?
∈ is “is an element of” (x ∈ A), while ∋ expresses the same idea in the reverse direction (A ∋ x).
What are the Unicode and HTML codes for ∋?
Unicode: U+220B. HTML entity: ∋.
Can I use ∋ in programming or markup?
Yes—use the correct escape for your environment, such as CSS escape \\220B or JavaScript escape \\u{220B}.