Mathematical Bold Italic Capital D 𝑫
Visual Description: This glyph is the Mathematical Bold Italic Capital D. It appears as a sturdy, slanted D with thick strokes and a smooth curve. The bold weight gives it presence, while the italic tilt marks it as a variable in formulas. On screens, it remains legible in calculators and editors.
Meaning & Usage: This letter is used to name variables and entities in math notation. It may represent a vector, a diagonal, or a label in a set of equations. In UI, it is often chosen to stand out in symbol palettes or to distinguish variables from ordinary text.
Historical Background: The bold italic style was developed to help readers spot important symbols in dense math. It offers a distinct contrast to plain letters, aiding quick recognition in formulas. The character was added to a Unicode family to support typography in technical documents and digital math tools.
Practical Use: In practice, you may insert this glyph to mark a variable in a calculation, or to denote a bold italic parameter in a formula. In calculators and editors, quick controls let you toggle font style or insert the symbol as a placeholder. Color or weight cues can emphasize this letter in comparisons.
See our category page for related symbols.
Look‑alikes: D (U+44).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D46B - General Category:
Lu - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 0044 - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 91 AB - UTF-16:
D835 DC6B - UTF-32:
0001D46B - HTML dec:
𝑫 - HTML hex:
𝑫 - JS escape:
\u{1D46B} - Python \N{}:
\N{MATHEMATICAL BOLD ITALIC CAPITAL D} - Python \U:
\U0001D46B - URL-encoded:
%F0%9D%91%AB - CSS escape:
\1D46B
How to type / insert
Fast copy: click the Copy button near the top of this page.
By codepoint: in many editors and IDEs, you can insert via the Unicode code U+1D46B or a built‑in character picker.
HTML: use the numeric entity 푫 (hex) or 푫 (decimal) when an HTML entity is needed.
Compatibility & troubleshooting
Font support: if the symbol does not render, the current font likely lacks this codepoint. Choose a font with broad Unicode coverage or allow a fallback font.
Web pages: ensure your CSS font stack includes a general fallback; avoid relying on images for common symbols to preserve accessibility and copyability.