Mathematical Bold Capital O Symbol
๐ (U+1D40E) is the Mathematical Bold Capital O used to represent bold โOโ in math and technical text.
U+1D40E
The symbol ๐ is a mathematical bold form of a capital letter O. Itโs useful when you need a typographic โbold Oโ that matches mathematical styling. You can copy it directly or use its Unicode details in your project.
Mathematical Bold Capital O Symbol Meaning
๐ is the Unicode character โMATHEMATICAL BOLD CAPITAL Oโ with code point U+1D40E. In practice, itโs used as a bold, math-styled capital O rather than a regular uppercase O. Designers and writers use it to create visual hierarchy in formulas, labels, or variables, especially when distinguishing different sets of symbols. In development, it can be used anywhere Unicode text is supported, such as HTML, CSS, and JavaScript, to ensure the correct glyph appears reliably.
Common uses
- โขTyping bold math variables or constants labeled with O
- โขDesigning equation headings or emphasized โOโ terms in documents
- โขCreating consistent typography in technical diagrams and labeling
- โขUsing in UI text where a math-styled bold capital O is preferred
- โขProgrammatically inserting the symbol via Unicode escape sequences
Examples
๐ โ Mathematical Bold Capital O
- ๐Let ๐ be an origin point.
- ๐Compute the value of ๐ in the formula.
- ๐The set is denoted by ๐.
- ๐Use ๐ to label the output.
- ๐Compare ๐ with ๐ and note the style difference.
Variations
Ready to copy
Technical codes
| Unicode | U+1D40E | |
| HTML Entity | 𝐎 | |
| HTML Code | 𝐎 | |
| CSS | \1D40E | |
| Decimal | 119822 |
How to type Mathematical Bold Capital O Symbol (๐)
On Windows
In Word, type 1D40E then press Alt + X. Or open the emoji picker with Windows key + period.
On Mac
Press Control + Command + Space to open Character Viewer and search for the character.
On Linux
Press Control + Shift + U, type 1d40e, then press Enter or Space.
Anywhere
Copy ๐ with the button above and paste it wherever you need it โ this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Mathematical Bold Capital O symbol mean?
๐ is the Unicode character โMATHEMATICAL BOLD CAPITAL Oโ with code point U+1D40E. In practice, itโs used as a bold, math-styled capital O rather than a regular uppercase O. Designers and writers use it to create visual hierarchy in formulas, labels, or variables, especially when distinguishing different sets of symbols. In development, it can be used anywhere Unicode text is supported, such as HTML, CSS, and JavaScript, to ensure the correct glyph appears reliably.
What Unicode character is ๐?
๐ is the character โMATHEMATICAL BOLD CAPITAL Oโ, Unicode code point U+1D40E.
How can I copy ๐ into my work?
Copy the character directly from this page, or paste the symbol into your document/editor. Itโs the exact glyph for the Unicode mathematical bold capital O.
What are the Unicode escape forms for ๐ in code?
HTML entity: 𝐎. CSS escape: \\1D40E. JavaScript escape: \\u{1D40E}.
Why use ๐ instead of a regular โOโ?
Because ๐ is a specifically mathematical bold-styled capital O, which helps match typographic conventions in equations, variable labels, and technical designs.