Lowercase i with double grave (ȉ) is the Latin Extended-B character at Unicode U+0209 (LATIN SMALL LETTER I WITH DOUBLE GRAVE). Two grave accents sit above the letter. It is used in linguistics and tone marking. HTML5 defines no named entity for it.
Remember
Character ȉ
Unicode U+0209
Named entity (none)
Hex entity ȉ
Decimal ȉ
CSS escape \0209
All of these produce the same glyph: ȉ. Prefer a pasted ȉ in UTF-8 pages; use numeric or CSS forms when you need an escape.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Direct character
ȉ
HTML text (UTF-8 default)
Named entity
none
—
Hex entity
ȉ
HTML markup
Decimal entity
ȉ
HTML markup
CSS escape
\0209
Stylesheet content
When to Use Which
Situation
Use
Linguistic / tone UTF-8 text
Type or paste ȉ
Numeric entity required
ȉ or ȉ
Generated text via ::before / ::after
content: "\0209"
Single grave i (ì)
ì — different character
Plain i
i (U+0069)
See it
Live Preview
Lowercase i with double grave rendered in common contexts.
Inline textSample: kȉta
Large glyphȉ
Case pairȈ ȉ
With entitiesHex: ȉ | Decimal: ȉ
Not the samei (U+0069) · ì (ì)
Code
Complete HTML Example
One page that shows lowercase i with double grave with hex, decimal, and CSS forms. Use View Output or open the live editor.
Hex + Decimal + CSS
Three ways to produce ȉ in a single document (no named entity).
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Lowercase I Double Grave (ȉ) in HTML</title>
<style>
#point::after {
content: "\0209";
}
</style>
</head>
<body>
<p>I Double Grave using Hex Code: ȉ</p>
<p>I Double Grave using HTML Code: ȉ</p>
<p id="point">I Double Grave using CSS Entity: </p>
</body>
</html>
I Double Grave using Hex Code: ȉ
I Double Grave using HTML Code: ȉ
I Double Grave using CSS Entity: ȉ
How It Works
1. Hex:U+0209 → ȉ in HTML. There is no named entity for this code point.
2. Decimal: same code point as 521 → ȉ. Same glyph.
3. CSS: use \0209 in content (not an HTML entity). #point::after appends that ȉ after the paragraph text.
Pitfalls & Tips
Common mistakes when working with the i double grave entity.
Named
No named entity
HTML5 does not define a named entity for U+0209. Use ȉ or ȉ.
CSS vs HTML
Do not mix escapes
\0209 belongs in CSS. ȉ / ȉ belong in HTML.
Look-alikes
Not i or ì
Plain i is U+0069; i grave ì is U+00EC. Double grave is a different diacritic.
Case
ȉ vs Ȉ
Uppercase is U+0208 — a different code point from U+0209.
Semicolon
End references
Always finish with ; — write ȉ, not ȉ.
UTF-8
Declare charset
If you paste ȉ directly, serve the page as UTF-8 with <meta charset="UTF-8">.
Compatibility
Browser Support
Lowercase i with double grave (U+0209) and its entity forms (ȉ, ȉ, CSS \\0209) are supported in all mainstream browsers.
✓ Universal support
Lowercase I Double Grave (ȉ)
Paste ȉ, or encode with hex, decimal, or CSS escape — same glyph everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+0209 / entitiesFull support
Bottom line: Prefer a pasted ȉ in UTF-8 text. Use ȉ / ȉ when a numeric form is required, and \\0209 only inside CSS content.
Remember
Key Takeaways
Unicode: i with double grave is U+0209 (decimal 521), Latin Extended-B.
HTML: no named entity — use ȉ or ȉ.
CSS: use \0209 inside content for generated text.
Use: linguistics / tone — not the same as plain i or ì.
One line:U+0209 → ȉ / ȉ / CSS \0209 (no named entity).
Frequently Asked Questions
Use ȉ (hex), ȉ (decimal), type or paste ȉ in a UTF-8 file, or the CSS escape \0209 in the content property. There is no HTML5 named entity for U+0209.
U+0209 (LATIN SMALL LETTER I WITH DOUBLE GRAVE). Hex 0209, decimal 521. It belongs to the Latin Extended-B block and is used in linguistics and tone notation.
No. HTML5 does not define a named entity for this character. Use numeric references ȉ or ȉ when you need an entity form.
Use it for linguistic tone marking, phonetic or orthographic examples, CSS-generated content, or when encoding must be explicit. Prefer a pasted ȉ in UTF-8 text when possible.
HTML entities (ȉ or ȉ) go in markup. The CSS escape \0209 is used in stylesheets (usually in the content property of ::before/::after). Both render ȉ.
Plain i is U+0069. I with single grave ì is U+00EC (ì). I with double grave ȉ is U+0209 — a different diacritic. Do not substitute one for another.
🤔
Did you know?
Lowercase i with double grave (ȉ) is Unicode U+0209 (decimal 521) in Latin Extended-B. HTML5 has no named entity for it — use ȉ or ȉ. Used in linguistics and tone marking.
