HTML Entity for Subscript Minus (₋)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+208B

What You'll Learn

How to display the Subscript Minus symbol (₋) in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+208B (SUBSCRIPT MINUS) in the Superscripts and Subscripts block (U+2070–U+209F)—used for a minus sign in subscript position.

Render it with ₋, ₋, or CSS escape \208B. There is no named HTML entity. It is commonly used in mathematical expressions, chemical formulas, and scientific notation where a dedicated subscript minus glyph is needed.

⚡ Quick Reference — Subscript Minus

Unicode U+208B

Superscripts and Subscripts

Hex Code ₋

Hexadecimal reference

HTML Code ₋

Decimal reference

Named Entity

Use numeric codes only

Reference Table
Name           Value
────────────   ──────────
Unicode        U+208B
Hex code       ₋
HTML code      ₋
Named entity   (none)
CSS code       \208B
Block          Superscripts and Subscripts (U+2070–U+209F)
Related        U+208A = Subscript plus (₊)
1

Complete HTML Example

This example demonstrates the Subscript Minus symbol (₋) using hexadecimal code, decimal HTML code, and a CSS content escape (no named entity):

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\208B";
  }
 </style>
</head>
<body>
<p>Subscript Minus using Hexadecimal: &#x208B;</p>
<p>Subscript Minus using HTML Code: &#8331;</p>
<p id="point">Subscript Minus using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Subscript Minus 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 Subscript Minus symbol (₋) rendered in different contexts:

Inline text Charge notation: Na₋ for a subscript minus sign.
Large glyph
In notation x1 — subscript minus in a formula
Monospace &#x208B; &#8331; \208B
vs regular − Subscript ₋   Regular −

🧠 How It Works

1

Hexadecimal Code

&#x208B; uses the Unicode hexadecimal value 208B to display the Subscript Minus symbol. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#8331; uses the decimal Unicode value 8331 to display the same character. This is one of the most commonly used methods.

HTML markup
3

CSS Entity

\208B is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All three methods produce the glyph: . Unicode U+208B in the Superscripts and Subscripts block (U+2070–U+209F). No named entity.

Use Cases

The Subscript Minus symbol (₋) commonly appears in:

📐 Math Expressions

Equations and formulas with subscript minus notation.

🧪 Chemical Formulas

Chemistry content and molecular notation with subscript signs.

🔬 Scientific Notation

Research papers and technical documentation.

📚 Academic Content

Textbooks, educational websites, and online courses.

🎓 Education

Tutorials teaching math, chemistry, and physics notation.

📄 Research Papers

Academic journals and conference proceedings.

💻 Math Software

Calculator interfaces and computational tool UIs.

💡 Best Practices

Do

  • Use &#x208B; or &#8331; for the dedicated subscript minus glyph
  • Pick one style (hex or decimal) per project for consistency
  • Serve pages with UTF-8 (<meta charset="utf-8">)
  • Add aria-label when the symbol stands alone in math content
  • Test rendering across browsers and fonts

Don’t

  • Confuse ₋ with a regular hyphen-minus (−) in subscript context
  • Put CSS escape \208B directly in HTML text nodes
  • Assume every font renders ₋ clearly at small sizes
  • Expect a named HTML entity for U+208B—use numeric references
  • Use HTML entities in JS (use \u208B instead)

Key Takeaways

1

Two HTML references both render ₋

&#x208B; &#8331;
2

For CSS stylesheets, use the escape in the content property

\208B
3

Unicode U+208B — SUBSCRIPT MINUS

4

No named entity—use numeric references or CSS escape

5

Part of the Superscripts and Subscripts block (U+2070–U+209F)

❓ Frequently Asked Questions

Use &#x208B; (hex), &#8331; (decimal), or \208B in CSS content. There is no named HTML entity. All three produce ₋.
U+208B (SUBSCRIPT MINUS). Superscripts and Subscripts block (U+2070–U+209F). Hex 208B, decimal 8331.
In mathematical expressions, chemical formulas, scientific notation, academic content, educational materials, research papers, and any content that needs minus signs in subscript notation.
HTML numeric references (&#8331; or &#x208B;) go directly in markup. The CSS escape \208B is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.
Named HTML entities cover common Latin and math characters, but not every Unicode symbol. Superscripts and Subscripts characters like ₋ use numeric codes (hex or decimal) because they belong to specialized Unicode blocks.

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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.

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