Precedes under relation (⊰) is the Mathematical Operators character at Unicode U+22B0 (PRECEDES UNDER RELATION). It means one element precedes another under a given relation — a specialized operator, not the same as plain precedes ≺.
Remember
Character ⊰
Unicode U+22B0
Hex entity ⊰
Decimal ⊰
CSS escape \22B0
Named entity (none)
Not the same ≺ · ⊱
Prefer typing ⊰ in UTF-8 HTML when your editor supports it; use ⊰ or ⊰ when you need an explicit entity.
Precedes under relation rendered in common math contexts.
Inline mathS ⊰ T
Large glyph⊰
MeaningS ⊰ T (precedes under relation)
Compared⊰ | ≺ | ⊱
With entitiesHex: ⊰ | Decimal: ⊰
Code
Complete HTML Example
One page that shows this operator with hex, decimal, CSS escape, and a typed character. Use View Output or open the live editor.
Hex + Decimal + CSS + Typed
Four ways to produce ⊰ in a single document.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Precedes Under Relation (⊰) in HTML</title>
<style>
#point::after {
content: "\22B0";
}
</style>
</head>
<body>
<p>Relation using Hex Code: S ⊰ T</p>
<p>Relation using HTML Code: S ⊰ T</p>
<p id="point">Relation using CSS Entity: S </p>
<p>Typed directly: S ⊰ T</p>
</body>
</html>
Relation using Hex Code: S ⊰ T
Relation using HTML Code: S ⊰ T
Relation using CSS Entity: S ⊰
Typed directly: S ⊰ T
How It Works
1. Hex:U+22B0 → ⊰ in HTML → ⊰.
2. Decimal: same code point as 8880 → ⊰. Same result as hex.
3. CSS: use \22B0 in content (not an HTML entity). #point::after appends that ⊰ after the paragraph text.
4. Typed: in a UTF-8 page you can paste ⊰ directly. There is no named &…; form.
Pitfalls & Tips
Common mistakes when working with this operator.
Named?
No named entity
HTML5 has no &…; name for U+22B0. Use ⊰ or ⊰.
≺
Not plain precedes
≺ (≺) is strict precedes. ⊰ means precedes under a relation.
⊱
Not succeeds under relation
⊱ is U+22B1 — the opposite direction under a relation.
CSS vs HTML
Do not mix escapes
\22B0 belongs in CSS strings. ⊰ / ⊰ belong in HTML.
Fonts
Math Operators support
Use fonts that include U+22B0 (e.g. Cambria Math, Noto Sans Math) so the glyph is not missing.
Semicolon
End references
Always finish with ; — write ⊰, not ⊰.
Compatibility
Browser Support
Precedes under relation (U+22B0) and its numeric entity forms (⊰, ⊰, CSS \\22B0) are supported in all mainstream browsers when the font includes Mathematical Operators.
✓ Universal support
Precedes Under Relation (⊰)
Encode with hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+22B0 / entitiesFull support
Bottom line: Use ⊰ or ⊰ in HTML for this operator, and \\22B0 only inside CSS content. Prefer ≺ when you only need strict precedes.
Remember
Key Takeaways
Unicode: this symbol is U+22B0 (decimal 8880) — glyph ⊰.
HTML: type ⊰, or use ⊰ / ⊰ (no named entity).
CSS: use \22B0 inside content for generated text.
Use case: precedes under a relation — not ≺ and not ⊱.
One line:U+22B0 → ⊰ / ⊰ / CSS \22B0 / type ⊰.
Frequently Asked Questions
Use ⊰ (hex), ⊰ (decimal), type ⊰ directly in UTF-8, or the CSS escape \22B0 in content. There is no named HTML entity for U+22B0.
U+22B0 (PRECEDES UNDER RELATION). Hex 22B0, decimal 8880. It belongs to the Mathematical Operators block.
No. Use numeric references like ⊰ or ⊰, or type the character ⊰ in a UTF-8 document.
≺ (U+227A, ≺) is strict precedes. ⊰ (U+22B0) is precedes under relation — a specialized operator for precedence relative to an underlying relation.
HTML entities (⊰ or ⊰) go in markup. The CSS escape \22B0 goes in stylesheet strings (usually content on ::before/::after).
No. ⊱ is U+22B1 (SUCCEEDS UNDER RELATION) — the opposite direction under a relation.
🤔
Did you know?
Precedes under relation is Unicode U+22B0 (decimal 8880) — glyph ⊰. HTML5 has no named entity — use ⊰ or ⊰. It marks precedence relative to an underlying relation. Distinct from strict precedes ≺ (≺, U+227A) and succeeds under relation ⊱ (U+22B1).
