On this page, Lowercase O Latin is the combining mark at Unicode U+0366 (COMBINING LATIN SMALL LETTER O). It places a small letter oon the preceding base character — used in linguistics and phonetic notation.
Remember
Mark combining latin small letter o
Unicode U+0366
Hex entity ͦ
Decimal ͦ
Named entity (none)
CSS escape \0366
Order base + mark → nͦ
Combining marks are not standalone letters. Write the base character first, then the entity (e.g. nͦ → nͦ). This is not the same as typing o (U+006F).
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Hex entity
ͦ
HTML after the base character
Decimal entity
ͦ
HTML after the base character
Named entity
None
HTML5 does not define one
CSS escape
\0366
Stylesheet content (often ::after)
Direct character
base + U+0366
UTF-8 HTML text
When to Use Which
Situation
Use
Readable numeric entity in HTML
baseͦ
Decimal entity required
baseͦ
Generated mark via ::after
content: "\0366" on an element that ends with the base
Using Hex Code: nͦ
Using HTML Code: nͦ
Using CSS Entity: nͦ
More bases: aͦ xͦ
How It Works
1. Hex:U+0366 → ͦ after the base. The browser combines them into nͦ.
2. Decimal: same code point as 870 → ͦ after the base. Same result as hex.
3. Named: HTML5 does not define a named entity for this mark — use hex or decimal instead.
4. CSS: use \0366 in content (not an HTML entity). #point::after appends the combining mark after the base text ending in n.
Pitfalls & Tips
Common mistakes when working with combining Latin small letter o.
Order
Base first, then mark
Write nͦ, not ͦn. Combining marks attach to the preceding character.
Look-alikes
Not letter o or subscript ₒ
o is U+006F. Subscript o is U+2092. This mark is combining and needs a base.
Named
No &…; shortcut
HTML5 has no named entity for U+0366. Use ͦ or ͦ.
CSS vs HTML
Do not mix escapes
\0366 belongs in CSS. ͦ / ͦ belong in HTML after the base.
Encoding
Declare UTF-8
If you type the combining character directly, keep <meta charset="UTF-8"> so the file is not misread.
Fonts
Check glyph coverage
Rendering of combining letter stacks is font-dependent. Pick a font that supports U+0366 if the mark is missing.
Compatibility
Browser Support
Combining Latin small letter o (U+0366) and its entity forms (ͦ, ͦ, CSS \\0366) are supported in all modern browsers. Visual stacking depends on font coverage.
✓ Universal encoding
Lowercase O Latin (U+0366)
Encode with hex, decimal, or CSS escape after a base — or type base + U+0366 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+0366Full support
Bottom line: Prefer baseͦ for readable HTML. Use \\0366 only inside CSS content.
Remember
Key Takeaways
Unicode: this combining mark is U+0366 (decimal 870).
HTML: prefer baseͦ — or use baseͦ (no named entity).
CSS: use \0366 inside content after a base.
Watch out: combining U+0366 ≠ letter o ≠ subscript ₒ.
One line: base + U+0366 → baseͦ / baseͦ / CSS \0366.
Frequently Asked Questions
Use ͦ (hex), ͦ (decimal), or the CSS escape \0366 in the content property. Place the mark immediately after the base character (e.g. nͦ). There is no named HTML entity.
U+0366 (COMBINING LATIN SMALL LETTER O). Hex 366, decimal 870. It belongs to Combining Diacritical Marks (U+0300–U+036F).
No. HTML5 does not define a named entity for U+0366. Use numeric references like ͦ or ͦ.
Use it in linguistics, phonetic notation, medieval stacks, and scholarly text where a small o sits above a base letter. Always write the base first, then the combining mark.
HTML entities (ͦ or ͦ) go in markup after the base. The CSS escape \0366 is used in stylesheets (usually in the content property of ::after). Both apply the same combining letter.
No. Letter o is U+006F. Subscript o is U+2092. U+0366 is a combining mark that attaches above (or with) the preceding base character.
🤔
Did you know?
Lowercase O Latin here means Unicode U+0366 (decimal 870) — COMBINING LATIN SMALL LETTER O in Combining Diacritical Marks. HTML5 has no named entity. Place it after the base (e.g. nͦ → nͦ). It is not the same as typed o (U+006F) or subscript ₒ.
