Lowercase a diaeresis macron (ǟ) is the Latin Extended-B character at Unicode U+01DF (LATIN SMALL LETTER A WITH DIAERESIS AND MACRON). It is the letter a with both a diaeresis (¨) and a macron (¯) — used in linguistics and specialized orthographies.
Remember
Character ǟ
Unicode U+01DF
Hex entity ǟ
Decimal ǟ
CSS escape \01DF
Named entity (none)
Capital Ǟ (U+01DE)
Hex, decimal, CSS, and a typed character all produce the same glyph: ǟ. Prefer ǟ in HTML source when you need an explicit entity.
Using Hex Code: ǟ
Using HTML Code: ǟ
Using CSS Entity: ǟ
Case pair: Ǟ / ǟ
How It Works
1. Hex:U+01DF → ǟ in HTML. The browser turns it into ǟ.
2. Decimal: same code point as 479 → ǟ. Same result as hex.
3. Named: HTML5 does not define a named entity for this character — use hex or decimal instead.
4. CSS: use \01DF in content (not an HTML entity). #point::after appends that ǟ after the paragraph text.
Pitfalls & Tips
Common mistakes when working with lowercase a diaeresis macron.
Named
No &…; shortcut
HTML5 has no named entity for U+01DF. Use ǟ or ǟ.
Look-alikes
Not ä alone
Diaeresis ä (ä) is U+00E4. This character adds a macron as well — it is a different code point.
Compose
Prefer precomposed
Use ǟ instead of stacking a + combining diaeresis + combining macron when the precomposed form exists.
CSS vs HTML
Do not mix escapes
\01DF belongs in CSS. ǟ / ǟ belong in HTML.
Encoding
Declare UTF-8
If you type ǟ directly, keep <meta charset="UTF-8"> so the file is not misread.
Fonts
Check glyph coverage
Some fonts omit Latin Extended-B. Pick a font that includes U+01DF if the glyph is missing.
Compatibility
Browser Support
Lowercase a diaeresis macron (U+01DF) and its entity forms (ǟ, ǟ, CSS \\01DF) are supported in all modern browsers. Glyph display depends on font coverage.
✓ Universal encoding
Lowercase A Diaeresis Macron (ǟ)
Encode with hex, decimal, or CSS escape — or type ǟ directly in UTF-8 HTML.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerIE 9+
Yes*
U+01DFFull support
Bottom line: Prefer ǟ for readable HTML. Use \\01DF only inside CSS content.
Remember
Key Takeaways
Unicode: this character is U+01DF (decimal 479).
HTML: prefer ǟ — or use ǟ (no named entity).
CSS: use \01DF inside content for generated text.
Watch out:ǟ ≠ ä (ä) ≠ capital Ǟ (Ǟ).
One line:U+01DF → ǟ / ǟ / CSS \01DF (no named entity).
Frequently Asked Questions
Use ǟ (hex), ǟ (decimal), or the CSS escape \01DF in the content property. All render ǟ when the font supports Latin Extended-B. There is no named HTML entity.
U+01DF (LATIN SMALL LETTER A WITH DIAERESIS AND MACRON). Hex 1DF, decimal 479. It belongs to Latin Extended-B (U+0180–U+024F).
No. HTML5 does not define a named entity for U+01DF. Use numeric references like ǟ or ǟ.
Use it for linguistics, phonetic transcription, language documentation, and specialized orthographies that need ǟ.
HTML entities (ǟ or ǟ) go in markup. The CSS escape \01DF is used in stylesheets (usually in the content property of ::before/::after). Both render ǟ.
Visually related, but U+01DF is a precomposed character (diaeresis + macron on a). Prefer the precomposed ǟ when available instead of stacking combining marks.
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Did you know?
Lowercase a diaeresis macron is Unicode U+01DF (decimal 479) — LATIN SMALL LETTER A WITH DIAERESIS AND MACRON in Latin Extended-B. HTML5 has no named entity — use ǟ or ǟ. Capital is Ǟ (U+01DE). Used in linguistics, phonetic transcription, and specialized orthographies.
