Math symbol reference

Star Operator

Marks a specialized star product, dual operation, or custom binary operator.

UnicodeU+22C6
LaTeX\star
HTML entity⋆
HTML decimal⋆
MathML<mo>⋆</mo>

Semantic identity and intent

Semantic type

operator

An operator, relation, connective, or notation mark whose meaning depends on its operands and context.

Primary search task

understand the operation or relation, see a valid example, and copy the correct notation

Functions and OperatorsAlgebra Symbols

MathML token

<mo>

Use ⋆ with the operand structure shown in the examples. Preserve grouping, limits, spacing, and evaluation order when converting between formats.

Characters to distinguish

  • ∗ — Asterisk Operator

Use ⋆ in the right format

Meaning and usage

Marks a specialized star product, dual operation, or custom binary operator.

State the definition because star notation varies across algebra, analysis, and physics.

Pronunciation: star operator

Formula examples

a⋆b

How to type Star Operator

Windows
Use Character Map or enter U+22C6 in a Unicode-aware application.
macOS
Open Character Viewer with Control–Command–Space and search by the symbol name.
Microsoft Word
In an equation, type \star and press Space when Word supports the command.
iPhone and iPad
Copy and paste ⋆, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
Android
Copy and paste ⋆, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
Google Docs
For plain text, paste ⋆ or use Insert → Special characters. For structured math, use the equation editor and verify \star.
Excel
Paste ⋆ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.

Common mistakes

  • Preserve grouping, operator order, and spacing around ⋆; State the definition because star notation varies across algebra, analysis, and physics.
  • For plain text, copy ⋆ as U+22C6; for structured equations, use \star in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Star Operator.

When to use ⋆

  • Use ⋆ in plain text when a Unicode character is appropriate and the destination preserves U+22C6.
  • Use \star in an equation editor when mathematical spacing or structure matters.
  • Define the local meaning when Star Operator is used in functions operators, algebra with a field-specific convention.

Look-alikes and related characters

  • ∗ — Asterisk Operator

Font and compatibility notes

Glyph shape can vary by font. Verify the code point after copying, and prefer LaTeX or MathML for structured equations.

Continue the workflow

From Star Operator to a finished equation

  1. Copy the characterUse ⋆ in plain text when Unicode is accepted.
  2. Choose a structured formatUse \star for LaTeX or the MathML snippet for accessible web equations.
  3. Edit or convertOpen the value in the editor or converter without retyping it.

Review and source notes

Quality tier: specialist

Last reviewed: 2026-07-23

Review method: Catalog review of character identity and notation mappings.

Verified against: Unicode Standard, Unicode mathematical notation guidance, and established LaTeX/MathML syntax.

Reference sources

Frequently asked questions

What does the Star Operator symbol mean?

Marks a specialized star product, dual operation, or custom binary operator.

What is the LaTeX command for ⋆?

Use \star in a compatible math environment.

Can I copy ⋆ as Unicode?

Yes. Use the copy button above to copy the Unicode character directly.

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