HTML Entity for Circled Asterisk Operator (⊛)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+229B

What You'll Learn

How to display the Circled Asterisk Operator (⊛) in HTML using numeric references, named entities, and CSS escapes. This character is U+229B (CIRCLED ASTERISK OPERATOR) in the Mathematical Operators block (U+2200–U+22FF). It denotes a circled-asterisk binary operator in formal math and logic notation.

You can use the named entity ⊛ (alias ⊛), hex ⊛, decimal ⊛, or CSS \229B. Do not confuse ⊛ with plain asterisk U+002A (*) or the circled ring operator U+229A (⊚).

⚡ Quick Reference — Circled Asterisk Operator

Unicode U+229B

Mathematical Operators block

Hex Code ⊛

Hexadecimal reference

HTML Code ⊛

Decimal reference

Named Entity ⊛

Also ⊛

Reference Table
Name           Value
────────────   ──────────
Unicode        U+229B
Hex code       ⊛
HTML code      ⊛
Named entity   ⊛ / ⊛
CSS code       \229B
1

Complete HTML Example

This example demonstrates the Circled Asterisk Operator (⊛) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\229B";
  }
 </style>
</head>
<body>
<p class="math">Circled Asterisk Operator using Hexa Decimal: &#x229B;</p>
<p class="math">Circled Asterisk Operator using HTML Code: &#8859;</p>
<p class="math">Circled Asterisk Operator using HTML Entity: &oast;</p>
<p class="math" id="point">Circled Asterisk Operator using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Circled Asterisk Operator entity is universally supported in all modern browsers:

Chrome 1+
Firefox 1+
Safari 1+
Edge 12+
Opera 4+
Android 4.4+
iOS Safari 1+

👀 Live Preview

See the Circled Asterisk Operator in math and notation contexts:

Binary expression a ⊛ b = c
Named entity x &oast; y  |  x &circledast; y
Large glyph
vs related ops ⊛ (U+229B)   ⊚ (U+229A ring)   * (U+002A)
Monospace refs &#x229B; &#8859; &oast; \229B

🧠 How It Works

1

Hexadecimal Code

&#x229B; uses the Unicode hexadecimal value 229B to display the Circled Asterisk Operator.

HTML markup
2

Decimal HTML Code

&#8859; uses the decimal Unicode value 8859 to display the same character.

HTML markup
3

Named HTML Entity

&oast; is the standard named entity (short for “operator asterisk”). &circledast; is an equivalent alias for U+229B.

HTML markup
4

CSS Entity

\229B is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce the operator glyph: . Unicode U+229B sits in Mathematical Operators (U+2200–U+22FF).

Use Cases

The Circled Asterisk Operator (⊛) commonly appears in:

∑ Math notation

Formal expressions and equations using the circled-asterisk operator.

∧ Logic & algebra

Boolean algebra, logic notation, and formal systems defining this operator.

📐 Scientific docs

Research papers, technical articles, and scientific web content.

📚 Education

Math and logic tutorials, textbooks, and e-learning platforms.

💻 CS documentation

Language specs or libraries referencing operator symbols.

🔤 Symbol references

Unicode tables, character maps, and operator glossaries.

♿ Accessibility

Use MathML or aria-label="circled asterisk operator" for screen readers.

💡 Best Practices

Do

  • Prefer &oast; for readable math HTML source
  • Use math-friendly fonts (Cambria Math, STIX Two Math, serif)
  • Keep entity style consistent within a document
  • Consider MathML for complex equations
  • Add accessible labels when the operator carries semantic meaning

Don’t

  • Confuse U+229B (⊛) with U+229A (⊚) or plain * (U+002A)
  • Put CSS escape \229B inside HTML text nodes
  • Assume every font renders Mathematical Operators identically
  • Use decorative ⊛ where a plain asterisk is intended
  • Mix entity styles randomly in one file

Key Takeaways

1

Named entity is the easiest option

&oast;
2

Numeric references also render ⊛

&#x229B; &#8859;
3

For CSS stylesheets, use the escape in the content property

\229B
4

U+229B CIRCLED ASTERISK OPERATOR

5

&circledast; is an alias for the same character

❓ Frequently Asked Questions

Use &oast; (named entity), &#x229B; (hex), &#8859; (decimal), or \229B in CSS content. All produce ⊛.
U+229B (CIRCLED ASTERISK OPERATOR). Mathematical Operators block (U+2200–U+22FF). Hex 229B, decimal 8859.
For mathematical expressions, logical operations, scientific documentation, educational math content, and operator symbol reference pages.
HTML entities (&oast;, &#8859;, or &#x229B;) go directly in markup. The CSS escape \229B is used in stylesheets, typically in the content property of pseudo-elements.
Yes. &oast; is the primary named entity for U+229B. &circledast; is an equivalent alias. You can also use &#8859; or &#x229B;.

Explore More HTML Entities!

Discover 1500+ HTML character references — math operators, symbols, arrows, and more.

All HTML Entities →

About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
  • Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

8 people found this page helpful