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𝜒

Mathematical Bold Italic Capital Eta Symbol

𝜒 (mathematical bold italic capital eta) is a styled Greek letter used in math and typographic notation.

U+1D722

𝜒 is a Unicode Greek letter styled as bold italic and set for mathematical text. It’s commonly needed when you want a specific look consistent across platforms. Use the provided copy options for HTML, CSS, and JavaScript.

Mathematical Bold Italic Capital Eta Symbol Meaning

𝜒 is the Unicode character named β€œMATHEMATICAL BOLD ITALIC CAPITAL ETA” (U+1D722). It represents a bold, italicized form of the Greek capital eta letter, intended for mathematical or typographic contexts where the font style matters. Compared with plain β€œeta” forms, this character emphasizes both weight (bold) and slant (italic), making it useful for math notation, labeling, or equations where different constants or variables must be visually distinguished. In everyday writing it’s less common, but designers and developers may use it to match a specific typographic style in math-heavy layouts.

Common uses

  • β€’Typing variables/constants in math equations that require bold italic styling
  • β€’Designing posters or infographics with math-themed typography
  • β€’Labeling notation in educational materials or worksheets
  • β€’Using consistent symbols in math-heavy UI text (e.g., formula panels)
  • β€’Including the exact symbol in developer documentation or specs

Examples

𝜒 Mathematical Bold Italic Capital Eta

  • 𝜒Let 𝜒 denote a constant in the model.
  • 𝜒The matrix uses 𝜒 as its scaled parameter.
  • 𝜒Define 𝜒 to represent the bold italic eta term.
  • 𝜒In this equation, 𝜒 appears alongside other labeled quantities.
  • 𝜒For display text, we use 𝜒 for emphasis in the notation.

Variations

Ready to copy

Technical codes

UnicodeU+1D722
HTML Entity𝜢
HTML Code𝜢
CSS\1D722

FAQ

What does 𝜒 stand for?

𝜒 is the Unicode character β€œMATHEMATICAL BOLD ITALIC CAPITAL ETA” (U+1D722), a bold italic form of the Greek capital eta used for mathematical/typographic notation.

How can I copy 𝜒 into HTML?

Use the HTML entity: 𝜢

How do I include 𝜒 in CSS?

Use the CSS escape: \\1D722

How do I include 𝜒 in JavaScript strings?

Use the JavaScript escape: \\u{1D722}