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U+2AA3 · Double Nested Less-Than with Underbar · Supplemental Mathematical Operators · Common

Double Nested Less-Than with Underbar ⪣

(U+2AA3) is a standard Unicode character that you can copy and paste anywhere text is accepted. This page provides a concise reference with safe tips, internal links, and practical guidance so you can use it reliably across apps and platforms.

What it is and where it’s used: Double Nested Less-Than with Underbar is part of the Symbols family (block: Supplemental Mathematical Operators). If you need styled or decorative alternatives, try our Fancy Text tool to generate compatible text that works in most modern interfaces.

History & usage: The symbol U+2AA3 is named DOUBLE NESTED LESS-THAN WITH UNDERBAR. It sits in the Supplemental Mathematical Operators block. The short usage note says that common math symbols indicate operations or comparisons in formulas and user interfaces. This tells us where the symbol appears and how it helps readers. In practice, it is used in contexts that show nesting or layered comparisons. It may appear in formulas, diagrams, or software interfaces where a nested relation is needed. As a result, users encounter it as a compact sign that combines a nesting idea with a separator under the bar. The character is part of a larger family of operators that extend basic comparison signs. When people read formulas, the sign communicates a structured relation between elements. It is one element among many that support precise notation in math and UI design. The overall purpose is to convey a formal relation clearly and quickly. In education and documentation, this symbol appears alongside other operators to help readers parse complex expressions. The usage remains consistent across contexts that describe or implement mathematical notation.

Copy and input: the quickest method is to copy the character here. You can also insert it by its codepoint U+2AA3 in many development tools or editors. Some operating systems provide a character viewer or input palette that lets you search by name or code and insert the glyph into documents.

Display and fallback: if you see an empty box (tofu) or a placeholder rectangle, the active font might not include this codepoint. Switching to a font with broader Unicode coverage or using a fallback font usually fixes the issue. On the web, ensure the page’s font stack includes a general‑purpose fallback.

Related references: browse the Categories for similar characters. When choosing a symbol, prefer the official codepoint for semantic clarity and better compatibility with search, copy, and accessibility tooling.

See our category page for related symbols.

Technical details
  • Codepoint: U+2AA3
  • General Category: Sm
  • Age: 3.2
  • Bidi Class: ON
  • Block: Supplemental Mathematical Operators
  • Script: Common
  • UTF-8: E2 AA A3
  • UTF-16: 2AA3
  • UTF-32: 00002AA3
  • HTML dec: ⪣
  • HTML hex: ⪣
  • JS escape: \u2AA3
  • Python \N{}: \N{DOUBLE NESTED LESS-THAN WITH UNDERBAR}
  • Python \u: \u2AA3
  • Python \U: \U00002AA3
  • URL-encoded: %E2%AA%A3
  • CSS escape: \2AA3
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+2AA3 or a built‑in character picker.

HTML: use the numeric entity ⪣ (hex) or ⪣ (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.