HTML Entity for R Reverse Solidus (ɿ)

Q: How do I display the r reverse solidus (ɿ) in HTML?

Use ɿ (hex), ɿ (decimal), or \27F in CSS content. There is no named HTML entity for ɿ. In UTF-8 you can also type ɿ directly.

Q: What is the Unicode value for r reverse solidus?

U+027F (LATIN SMALL LETTER REVERSE SOLIDUS) in the IPA Extensions block. Hex 027F, decimal 639. Used in phonetic and linguistic notation.

Q: What's the difference between ɿ and ɾ in IPA?

ɿ (U+027F) is r reverse solidus—a distinct IPA Extensions symbol. ɾ (U+027E) is r with fishhook—the alveolar tap or flap. They are different characters despite similar appearance in some fonts.

Beginner

⏱️ 5 min read

📚 Updated: Jun 2026

🎯 1 Code Example

Unicode U+027F

HTML Entity for R Reverse Solidus tutorial illustration

What You'll Learn

How to display the r reverse solidus (ɿ) in HTML using hexadecimal, decimal, and CSS escape methods. Officially LATIN SMALL LETTER REVERSE SOLIDUS, this IPA Extensions symbol is also listed in entity references as “reverse fishhook r.” The character is U+027F in the IPA Extensions block. Despite the legacy URL slug, this is a lowercase IPA letter, not an uppercase J.

Render it with ɿ, ɿ, or CSS escape \27F. There is no named HTML entity for this character. In UTF-8 documents you can also type ɿ directly.

⚡ Quick Reference — R Reverse Solidus Entity

Unicode U+027F

IPA Extensions

Hex Code ɿ

Hexadecimal reference

HTML Code ɿ

Decimal reference

Named Entity —

No named entity

Reference Table

Name           Value
────────────   ──────────
Unicode        U+027F
Hex code       &#x027F;
HTML code      &#639;
Named entity   (none)
CSS code       \27F
Meaning        Latin small letter r reverse solidus
Also known as  Reverse fishhook r
Related        U+027E = ɾ (r with fishhook)
               U+027B = ɻ (retroflex approximant)
               U+0279 = ɹ (turned r)
Block          IPA Extensions (U+0250–U+02AF)

Complete HTML Example

A simple example showing the r reverse solidus (ɿ) using hexadecimal code, decimal HTML code, and a CSS content escape:

html

<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\27F";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x027F;</p>
<p>Symbol (decimal): &#639;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>

Try It Yourself

🌐 Browser Support

The r reverse solidus (ɿ) is supported in all modern browsers as part of IPA Extensions:

Chrome1+

Firefox1+

Safari1+

Edge12+

Opera4+

Android4.4+

iOS Safari1+

👀 Live Preview

See the r reverse solidus (ɿ) in phonetic and typographic contexts:

Large glyphɿ

Unicode nameLATIN SMALL LETTER REVERSE SOLIDUS

Also known asReverse fishhook r (entity list name)

Unicode blockIPA Extensions (U+0250–U+02AF)

Not the same asɾ (fishhook) | ɻ (retroflex) | ɹ (turned r) | r (plain r)

Numeric refsɿ ɿ \27F

🧠 How It Works

Hexadecimal Code

ɿ uses the Unicode hexadecimal value 027F to display the character. The x prefix indicates hexadecimal format.

HTML markup

Decimal HTML Code

ɿ uses the decimal Unicode value 639 to display the same character. A common method when a numeric reference is needed.

HTML markup

CSS Entity

\27F 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: ɿ. Unicode U+027F sits in IPA Extensions. Do not confuse with ɾ (r with fishhook) or ɻ (retroflex approximant).

✅

Use Cases

The r reverse solidus (ɿ) is commonly used in:

🎤 IPA Transcription

Phonetic notation in IPA Extensions for specialized linguistic transcriptions.

📚 Language Learning

Pronunciation guides and phonology courses teaching extended IPA symbols.

📐 Typography

When a font or design includes this IPA character for linguistic or decorative use.

⚙ Programmatic HTML

When building HTML from phonetic databases, using ɿ or ɿ guarantees correct output.

📜 Academic Writing

Linguistics papers, phonology textbooks, and speech-science documentation.

♿ Accessibility

Using the correct character (U+027F) ensures assistive technologies handle phonetic content correctly.

🎨 CSS Generated Content

Using \27F in the CSS content property to insert ɿ via pseudo-elements.

💡 Best Practices

Do

Serve pages as UTF-8; you can type ɿ directly in UTF-8 source
Use ɿ for r reverse solidus, not ɾ (fishhook) or ɻ (retroflex)
Use numeric references (ɿ or ɿ) when escaping is required
Use \27F in CSS content when generating the symbol via pseudo-elements
Use fonts that support IPA Extensions (e.g. Doulos SIL, Charis SIL)

Don’t

Label this as uppercase J—the correct glyph is ɿ (U+027F), a lowercase IPA letter
Confuse ɿ with ɾ (r with fishhook) or ɻ (retroflex approximant)
Expect a named HTML entity—none exists for ɿ
Use U+0027F or CSS \0027F—the correct code is U+027F and \27F
Put CSS escape \27F in HTML text nodes

Key Takeaways

Three references render ɿ (no named entity)

ɿ ɿ

For CSS stylesheets, use the escape in the content property

\27F

Unicode U+027F — LATIN SMALL LETTER REVERSE SOLIDUS

Also known as reverse fishhook r in entity references

Previous: Uppercase J Middle Stroke (Ɉ) Next: Uppercase K

❓ Frequently Asked Questions

How do I display the r reverse solidus (ɿ) in HTML?

Use ɿ (hex), ɿ (decimal), or \27F in CSS content. There is no named HTML entity for ɿ. In UTF-8 you can also type ɿ directly.

What is the Unicode value for r reverse solidus?

U+027F (LATIN SMALL LETTER REVERSE SOLIDUS). IPA Extensions block. Hex 027F, decimal 639. Used in phonetic and linguistic notation.

When should I use the HTML entity for r reverse solidus?

When displaying IPA and phonetic transcriptions, linguistic dictionaries, language-learning content, academic phonology papers, or documentation. In UTF-8 pages you can type ɿ directly.

Is there a named HTML entity for r reverse solidus?

No. There is no named HTML entity for r reverse solidus (ɿ). Use numeric codes ɿ or ɿ, or the CSS entity \27F. In UTF-8 pages you can type ɿ directly.

What’s the difference between ɿ and ɾ in IPA?

ɿ (U+027F) is r reverse solidus—a distinct IPA Extensions symbol. ɾ (U+027E) is r with fishhook—the alveolar tap or flap. They are different Unicode characters despite similar shapes in some fonts.

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About the author

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.

AWS Certified Developer – Associate (Credly)

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