HTML Entity for Lowercase O Diaeresis Macron (ȫ)

Beginner
5 min read
Updated: Sep 2026
1 example
Unicode U+022B

What Is the Lowercase O Diaeresis Macron Entity?

Lowercase o with diaeresis and macron (ȫ) is the Unicode character at U+022B in Latin Extended-B. Official name: LATIN SMALL LETTER O WITH DIAERESIS AND MACRON — the letter o with two dots and a macron stacked above.

Remember
Character     ȫ
Unicode       U+022B
Hex entity    ȫ
Decimal       ȫ
CSS escape    \022B
Named entity  (none)
Capital       Ȫ (U+022A)
Not the same  o · ö (ö) · ō (ō)

Prefer ȫ or ȫ in HTML when you need an entity. You can also type ȫ in a UTF-8 document.

Quick Reference

One table for every form you will actually use.

FormCodeWhere it goes
Hex entityȫHTML markup
Decimal entityȫHTML markup
Direct characterȫHTML text (UTF-8)
CSS escape\022BStylesheet content
Named entity—Not defined in HTML5

When to Use Which

SituationUse
Need an entity in HTML sourceȫ or ȫ
Linguistics / transliterationȫ → ȫ
German / Swedish ö onlyö (U+00F6) — not U+022B
Uppercase O with diaeresis and macronUppercase O Diaeresis Macron (Ȫ, U+022A)
Generated text via ::before / ::aftercontent: "\022B"
Looking for a named entityDoes not exist — use numeric form

Live Preview

Glyph alone, in a sample line, and next to related forms.

Glyph ȫ
Large glyph ȫ
Sample oȫ · ȫ in notation
Compared ȫ   o   ö   ō   Ȫ
With entities Hex: ȫ | Decimal: ȫ

Complete HTML Example

One page that shows ȫ with hex, decimal, CSS escape, and a typed character. Use View Output or open the live editor.

Hex + Decimal + CSS + Typed

Four ways to display ȫ in HTML and CSS.

html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Lowercase O Diaeresis Macron (ȫ) in HTML</title>
  <style>
    #point::after {
      content: "\022B";
    }
  </style>
</head>
<body>
  <p>Built with Hex: &#x22B;</p>
  <p>Built with Decimal: &#555;</p>
  <p id="point">Built with CSS: </p>
  <p>Typed: ȫ</p>
  <p>Notation: [&#x22B;]</p>
</body>
</html>
Try It Yourself

How It Works

1. Hex: U+022B → &#x22B; in HTML. The browser turns it into ȫ.

2. Decimal: same code point as 555 → &#555;. Same result as hex.

3. CSS: use \022B in content (not an HTML entity). #point::after appends ȫ.

4. Typed: paste ȫ in a UTF-8 document for linguistic text. There is no named entity — numeric form is required when you need an entity.

Pitfalls & Tips

Common mistakes when working with lowercase o with diaeresis and macron.

Named?

No named entity

HTML5 does not define a named entity for U+022B. Use &#x22B; or &#555;.

ö

Not plain &ouml;

ö (&ouml;) has only the diaeresis. ȫ also has a macron — different letter, different code point.

Look-alikes

Not omacr alone

ō (&omacr;) is o with macron only. Do not swap it for ȫ when both accents are required.

Fonts

Need Extended-B coverage

Some fonts omit Latin Extended-B. Prefer a font that includes U+022B for reliable glyphs.

CSS

Pad the CSS escape

Prefer \022B (four hex digits). A short \22B can swallow the next hex digit if one follows immediately.

CSS vs HTML

Do not mix escapes

\022B belongs in CSS strings. &#x22B; / &#555; belong in HTML.

Semicolon

End references

Always finish entities with ; — write &#x22B;, not &#x22B.

Browser Support

Lowercase o with diaeresis and macron (U+022B) and its entity forms (&#x22B;, &#555;, CSS \\022B) are supported in all mainstream browsers. Visible glyphs depend on Latin Extended-B font coverage.

✓ Universal support

Lowercase O Diaeresis Macron (&#x022B;)

Encode with hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.

100% Browser coverage
Google Chrome Supported
Yes
Microsoft Edge Supported
Yes
Mozilla Firefox Supported
Yes
Apple Safari Supported
Yes
Opera Supported
Yes
Internet Explorer All versions
Yes
U+022B Full support

Bottom line: Prefer &#x22B; or &#555; in HTML when encoding must be explicit, and \\022B only inside CSS content. There is no named entity.

Key Takeaways

  • Unicode: lowercase o with diaeresis and macron is U+022B (decimal 555) — glyph ȫ.
  • HTML: use &#x22B; or &#555; — no named entity.
  • CSS: use \022B inside content for generated text.
  • Watch out: ȫ ≠ &ouml; ≠ &omacr; ≠ plain o.

One line: U+022B → &#x22B; / &#555; / CSS \022B (no named entity).

Frequently Asked Questions

Use &#x22B; (hex), &#555; (decimal), type ȫ in UTF-8, or the CSS escape \022B in content. There is no HTML5 named entity for U+022B.
U+022B (LATIN SMALL LETTER O WITH DIAERESIS AND MACRON). Hex 22B, decimal 555. It belongs to Latin Extended-B (U+0180–U+024F).
No. HTML5 does not define a named entity for this character. Use numeric references like &#555; or &#x22B; when you need an entity form.
Use it for linguistic notation, transliteration systems, and extended Latin orthographies that need ȫ. Prefer plain o or &ouml; for everyday German/Swedish ö.
HTML entities (&#555; or &#x22B;) go in markup. The CSS escape \022B goes in stylesheet strings (usually content on ::before/::after).
No. U+022B is a precomposed letter with both diaeresis and macron. ö (U+00F6, &ouml;) has only the two dots. Combining diaeresis is U+0308 and combining macron is U+0304 after a base.

Did you know?

Lowercase o with diaeresis and macron is Unicode U+022B (decimal 555) — LATIN SMALL LETTER O WITH DIAERESIS AND MACRON in Latin Extended-B. HTML5 has no named entity for it — use &#x22B; or &#555;. Capital is U+022A (Ȫ). It stacks two dots and a macron on o, mainly for linguistics and transliteration.

Next: Lowercase O Dot Above

Learn the HTML entity for lowercase o with dot above (ȯ).

Lowercase O dot above tutorial →

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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