HTML Entity for Combining Plus Sign Below

What You'll Learn
How to display the combining plus sign below (U+031F) in HTML using hexadecimal, decimal, and CSS escape methods. This is a combining diacritical mark—it attaches below the preceding base character (e.g. a̟) and is used in IPA, linguistics, and specialized notation.
Render it with ̟ or ̟ immediately after a base letter. There is no named HTML entity. Do not confuse U+031F with U+00B1 (±, plus-minus) or U+002B (+, plus sign)—those are standalone symbols, not combining marks.
⚡ Quick Reference — Combining Plus Sign Below
U+031FCombining Diacritical Marks
̟Hexadecimal reference
̟Decimal reference
—Use numeric codes only
Name Value
──────────── ──────────
Unicode U+031F
Hex code ̟
HTML code ̟
Named entity (none)
CSS code \031F
Meaning Combining plus sign below
Usage Place after base letter: a̟
Related U+00B1 = plus-minus (±)
U+002B = plus sign (+)
U+032A = combining bridge below
Block Combining Diacritical Marks (U+0300–U+036F)Complete HTML Example
A simple example showing the combining mark on letter a using hex, decimal, and CSS content:
<!DOCTYPE html>
<html>
<head>
<style>
#point::after{
content: "a\031F";
}
</style>
</head>
<body>
<p>Plus below (hex): a̟</p>
<p>Plus below (decimal): a̟</p>
<p>Plus below (CSS): <span id="point"></span></p>
</body>
</html>🌐 Browser Support
The combining plus sign below is widely supported in all modern browsers when paired with a base character:
👀 Live Preview
See the combining plus sign below attached to base letters:
🧠 How It Works
Hexadecimal Code
̟ uses Unicode hex 031F. Place it immediately after a base character: a̟.
Decimal HTML Code
̟ uses decimal 799 for the same combining mark: a̟.
CSS Entity
\031F in CSS content works with a base letter: content: "a\031F";.
Combining mark result
All three methods produce a̟ when paired with base a. Unicode U+031F in Combining Diacritical Marks (U+0300–U+036F).
Use Cases
The combining plus sign below (U+031F) is commonly used in:
Phonetic transcriptions requiring a plus diacritic below a letter.
Academic papers and language documentation with specialized diacritics.
Phonology and orthography courses teaching combining mark usage.
Character tables and entity guides for combining diacritical marks.
Notation guides explaining how combining characters attach to base glyphs.
Sites publishing phonetic or dialectology content with proper Unicode.
Provide plain-language descriptions; combining marks may read oddly in screen readers.
💡 Best Practices
Do
- Place
̟or̟immediately after the base letter - Use
content: "a\031F"in CSS when generating combined glyphs - Set
<meta charset="utf-8">for reliable rendering - Pick one numeric style per project for consistency
- Test with the fonts used in your linguistic or academic content
Don’t
- Use U+031F alone expecting a visible plus sign—it needs a base character
- Confuse combining plus below with ± (U+00B1) or + (U+002B)
- Use padded notation like U+0031F—the correct value is
U+031F - Use CSS
\031Fin HTML text nodes without a base letter - Assume all fonts render combining marks identically—test your typeface
Key Takeaways
Two HTML numeric references plus CSS for U+031F
̟ ̟Always pair with a base letter: a̟ → a̟
Unicode U+031F — COMBINING PLUS SIGN BELOW
No named entity—use hex, decimal, or CSS with a base character
Previous: Plus Minus (±) Next: Pluto (♇)
❓ Frequently Asked Questions
a̟ (hex) or a̟ (decimal). The combining mark renders a plus below the preceding letter.U+031F (COMBINING PLUS SIGN BELOW). Combining Diacritical Marks block. Hex 031F, decimal 799.Explore More HTML Entities!
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