Integral with Underbar ⨜

Semantic identity and intent

Characters to distinguish

• ∫ — Integral
• ∂ — Partial Derivative

Use ⨜ in the right format

Meaning and usage

The Unicode character ⨜ is named integral with underbar and is used as a specialized mathematical sign in contexts where its exact shape carries meaning.

Use ⨜ only when the source or field defines this exact symbol. For Integral with Underbar (⨜), in portable equation source, keep the character or an equivalent LaTeX command together with a written definition because visually similar signs can represent different relations or operators.

Pronunciation: integral with underbar

Formula examples

How to type Integral with Underbar

Windows

Open Character Map or enter Unicode 2A1C in a Unicode-aware application.

macOS

Open Character Viewer and search for integral with underbar.

Microsoft Word

Type 2A1C, then press Alt+X in Word where supported.

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 ⨜.

Excel

Paste ⨜ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.

Common mistakes

• Check whether ⨜ is acting as an operator, differential, index, or variable in the surrounding expression; Use ⨜ only when the source or field defines this exact symbol. For Integral with Underbar (⨜), in portable equation source, keep the character or an equivalent LaTeX command together with a written definition because visually similar signs can represent different relations or operators.
• For plain text, copy ⨜ as U+2A1C; for structured equations, use ⨜ in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Integral with Underbar.

When to use ⨜

• Use ⨜ in plain text when a Unicode character is appropriate and the destination preserves U+2A1C.
• Use ⨜ in an equation editor when mathematical spacing or structure matters.
• Define the local meaning when Integral with Underbar is used in calculus, algebra with a field-specific convention.

Look-alikes and related characters

• ∫ — Integral
• ∂ — Partial Derivative

Font and compatibility notes

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

Review and source notes

Quality tier: core

Last reviewed: 2026-07-26

Review method: Checked Integral with Underbar against its Unicode identity, LaTeX representation, HTML serialization, MathML token, and copy-and-paste behavior.

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

Reference sources

• The Unicode StandardUnicode Consortium — Character identity, encoding, names, and conformance.
• Unicode Character Code ChartsUnicode Consortium — Code points and official character charts.
• Unicode Technical Report #25: Unicode Support for MathematicsUnicode Consortium — Mathematical character usage, variants, and notation support.
• LaTeX Project DocumentationThe LaTeX Project — LaTeX syntax, authoring model, and official documentation links.
• MathML CoreW3C — Semantic web mathematics elements and browser behavior.

Frequently asked questions