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𝐨

Mathematical Bold Small O Symbol

𝐨 is the mathematical bold small letter o (U+1D428), commonly used for math-style and typographic emphasis.

U+1D428

𝐨 is a Unicode character from the Mathematical Alphanumeric Symbols block. It renders as a bold lowercase β€œo” and is useful when you want math-styled text that matches specific typographic needs.

Mathematical Bold Small O Symbol Meaning

The character 𝐨 is Unicode β€œMATHEMATICAL BOLD SMALL O” at code point U+1D428 (HTML entity 𝐨). Visually, it looks like a bold lowercase β€œo” intended for mathematical or technical typography. It’s often used when authors need a consistent mathematical font weight and shape that differs from regular β€œo” or italic/normal letter forms. Because it’s a distinct Unicode character, copying it preserves the intended style across apps that support the glyph. It can be used in formulas, labels, and design elements where a math-bold β€œo” reads clearly and consistently.

Common uses

  • β€’Math-style variables and parameters in text-based equations
  • β€’Designing typographic labels that need a bold math β€œo”
  • β€’Creating consistent Unicode-styled text for presentations and UI copy
  • β€’Marking terms or elements in educational or technical writing
  • β€’Using in web content where a specific bold math glyph is required

Examples

𝐨 (Mathematical Bold Small O)

  • 𝐨Let 𝐨 be a constant in the model.
  • 𝐨The value of 𝐨 is determined experimentally.
  • 𝐨We denote the output by 𝐨.
  • 𝐨In equation form: y = 𝐨x + b.
  • 𝐨Choose 𝐨 to maximize the score.

Variations

Ready to copy

Technical codes

UnicodeU+1D428
HTML Entity𝐨
HTML Code𝐨
CSS\1D428

FAQ

What does the Mathematical Bold Small O symbol mean?

The character 𝐨 is Unicode β€œMATHEMATICAL BOLD SMALL O” at code point U+1D428 (HTML entity 𝐨). Visually, it looks like a bold lowercase β€œo” intended for mathematical or technical typography. It’s often used when authors need a consistent mathematical font weight and shape that differs from regular β€œo” or italic/normal letter forms. Because it’s a distinct Unicode character, copying it preserves the intended style across apps that support the glyph. It can be used in formulas, labels, and design elements where a math-bold β€œo” reads clearly and consistently.

What Unicode character is 𝐨?

𝐨 is the Unicode character β€œMATHEMATICAL BOLD SMALL O” with code point U+1D428.

How can I copy 𝐨 reliably from this page?

Select and copy the symbol character 𝐨 directly. For best results, use the copy/paste character itself rather than approximations like a normal β€œo”.

What are the available HTML and escape forms for 𝐨?

HTML entity: 𝐨. CSS escape: \\1D428. JavaScript escape: \\u{1D428}.

Does 𝐨 look different from a normal 'o'?

Yes. 𝐨 is a distinct math-style bold lowercase β€œo” glyph, so it can appear different in weight and shape from a regular letter o depending on the font.