Element of underbar (⋸) is the Unicode character at U+22F8 in Mathematical Operators. Official name: ELEMENT OF UNDERBAR. It is a membership operator drawn with an underbar — useful in formal set notation.
Remember
Character ⋸
Unicode U+22F8
Hex entity ⋸
Decimal ⋸
CSS escape \22F8
Named entity (none)
Not the same ∈ (isin) · ∉ (notin) · ∋ (ni)
Prefer ⋸ or ⋸ in HTML (no named form). You can also type ⋸ in a UTF-8 document.
Built with Hex: ⋸
Built with Decimal: ⋸
Built with CSS: ⋸
Typed: ⋸
Membership: x ⋸ S
How It Works
1. Hex:⋸ inserts code point U+22F8 → ⋸.
2. Decimal: same code point as 8952 → ⋸. Same visual as hex.
3. CSS: use \22F8 in content (not an HTML entity). #point::after appends ⋸.
4. Typed: paste ⋸ in a UTF-8 document, or write membership like x ⋸ S.
Pitfalls & Tips
Common mistakes when working with Element Of Underbar.
Name
No named entity
There is no HTML5 named entity for U+22F8. Use ⋸ or ⋸.
∈
Not plain ∈
U+2208 is the ordinary element-of symbol. U+22F8 adds an underbar.
∉
Not ∉
U+2209 means “not an element of.” Do not use the underbar form as a substitute for negation.
CSS vs HTML
Do not mix escapes
\22F8 belongs in CSS strings. ⋸ / ⋸ belong in HTML.
Fonts
Math font coverage
Some fonts omit less-common Mathematical Operators. Prefer a font with solid math coverage.
a11y
Add accessible text
Screen readers may not expand ⋸ clearly. Prefer full phrases nearby (for example “x is an element of S”) when the meaning matters.
Semicolon
End references
Always finish numeric entities with ; — write ⋸, not ⋸.
Compatibility
Browser Support
Element of underbar (U+22F8) and its entity forms (⋸, ⋸, CSS \\22F8) are supported in all mainstream browsers. Visible glyphs depend on Mathematical Operators font coverage.
✓ Universal support
Element Of Underbar (⋸)
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+22F8 / entitiesFull support
Bottom line: Prefer ⋸ in HTML (no named form). Use ⋸ when decimal form is required, and \\22F8 only inside CSS content.
Remember
Key Takeaways
Unicode: element of underbar is U+22F8 (decimal 8952) — glyph ⋸.
HTML: no named entity — use ⋸ / ⋸ / type ⋸.
CSS: use \22F8 inside content for generated text.
Meaning: underbar form ≠ plain ∈ ≠ notin ∉.
One line:U+22F8 → ⋸ / ⋸ / CSS \22F8.
Frequently Asked Questions
Use ⋸ (hex), ⋸ (decimal), type ⋸ directly in UTF-8, or the CSS escape \22F8 in content. There is no named HTML entity for U+22F8.
U+22F8 (ELEMENT OF UNDERBAR). Hex 22F8, decimal 8952. It belongs to the Mathematical Operators block (U+2200–U+22FF).
No. Use numeric forms ⋸ or ⋸. The plain element-of symbol uses ∈ (U+2208).
Use it when you need the underbarred membership operator in formal math. Prefer ∈ (U+2208) for ordinary “element of,” and ∉ when you need negation.
HTML entities (⋸ or ⋸) go in markup. The CSS escape \22F8 goes in stylesheet strings (usually content on ::before/::after).
No. U+22F8 is ⋸ (element of underbar). U+2208 is ∈ (plain element of), usually written with ∈.
🤔
Did you know?
Element of underbar is Unicode U+22F8 (decimal 8952) — glyph ⋸ (ELEMENT OF UNDERBAR) in Mathematical Operators. There is no HTML5 named entity; use ⋸ or ⋸. The plain membership symbol is ∈ (∈, U+2208).
