HTML Entity for Contains As Member (∋)
What You'll Learn
How to display Contains As Member (∋) in HTML and CSS. This character is U+220B (CONTAINS AS MEMBER) in the Mathematical Operators block (U+2200–U+22FF). It denotes that a set contains an element—the reverse of “element of” U+2208 (∈): for example, A ∋ x means “set A contains x.”
There is no named HTML entity for U+220B. Use ∋, ∋, or \220B in CSS content. Element-of has ∈ for U+2208; contains-as-member does not. Do not confuse ∋ with the small variant U+220D (∍) or astronomical Conjunction U+260C (☌).
⚡ Quick Reference — Contains As Member
U+220BMathematical Operators (U+2200–U+22FF)
∋Hexadecimal reference
∋Decimal reference
—None (use numeric refs)
Name Value
──────────── ──────────
Unicode U+220B
Hex code ∋
HTML code ∋
Named entity —
CSS code \220BComplete HTML Example
This example shows U+220B using hexadecimal and decimal character references, plus a CSS content escape. There is no named HTML entity:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\220B";
}
</style>
</head>
<body>
<p>Contains As Member using Hexa Decimal: ∋</p>
<p>Contains As Member using HTML Code: ∋</p>
<p id="point">Contains As Member using CSS Entity: </p>
</body>
</html>🌐 Browser Support
U+220B is supported in modern browsers; use a math-capable font for best glyph quality:
👀 Live Preview
See the contains-as-member symbol in mathematical contexts:
🧠 How It Works
Hexadecimal Code
∋ references code point U+220B using hex digits 220B.
Decimal HTML Code
∋ is the decimal equivalent (8715) for the same character.
CSS Entity
\220B is the CSS escape for U+220B, used in the content property of ::before or ::after.
Same visual result
All three methods produce the contains-as-member glyph: ∋. Unicode U+220B is in Mathematical Operators (U+2200–U+22FF). No named HTML entity exists.
Use Cases
Contains As Member (∋) commonly appears in:
Express that a set contains an element (reverse of x ∈ A).
Discrete mathematics, logic courses, and online textbooks.
Formal logic, computer science docs, and set-operation tutorials.
White papers and specifications with inline math notation.
CMS or tools rendering math symbols without MathML.
Unicode tables and Mathematical Operators glossaries.
Provide surrounding text like “set A contains x” for screen reader clarity.
💡 Best Practices
Do
- Use
∋or∋for the standard contains-as-member glyph - Use math fonts (Cambria Math, STIX Two Math) for clear operators
- Use
∈for element-of (∈) and ∋ for contains-as-member - Use
\220Bonly inside CSScontent - Link to the small variant ∍ page when compact notation is needed
Don’t
- Confuse U+220B (∋) with U+2208 (∈) or U+260C (☌ conjunction)
- Use ∋ for logical “and” in prose
- Assume a named entity exists—U+220B has none
- Put CSS escape
\220Bin HTML text nodes - Mix hex and decimal styles randomly in one file
Key Takeaways
No named entity—use numeric references
∋ ∋For CSS stylesheets, use the escape in the content property
\220BU+220B CONTAINS AS MEMBER
Reverse of element-of ∈; pair with ∈ when needed
Three methods, one glyph — widely supported in modern browsers
❓ Frequently Asked Questions
∋ (hex), ∋ (decimal), or \220B in CSS content. There is no named HTML entity for U+220B.U+220B (CONTAINS AS MEMBER). Mathematical Operators (U+2200–U+22FF). Hex 220B, decimal 8715.U+2208 (∈) means “x is an element of A” (x ∈ A). U+220B (∋) reverses the operands: A ∋ x means “A contains x.” Element-of has the named entity ∈; contains-as-member does not.∋ or ∋. For the small variant, see Contains As Member Small (∍).Explore More HTML Entities!
Discover 1500+ HTML character references — math operators, symbols, arrows, and more.
About the author
8 people found this page helpful