Open Subset ⟃
Usage snapshot:
- Used in content written with the Common script; suitable for UI labels and body text.
- Appears in the Unicode block Miscellaneous Mathematical Symbols-A.
History & usage: The character OPEN SUBSET depicts the official name OPEN SUBSET. The tokens OPEN and SUBSET signal a functional idea in orthography: OPEN indicates initiation or availability, while SUBSET denotes a relation of inclusion. These are generic terms that help readers understand how the symbol is used in mathematical notation and typographic labeling, without tying it to any single language. In practice, editors and educators emphasize its role as a symbol that marks a particular subset relation or a boundary in a formal sequence. Use cases focus on scholarly and educational contexts. First, in dictionaries, grammars, and primers, editors may annotate symbols that express set relations to illustrate notation conventions and typographic legends. Second, in scholarly editions and archival transcription, the symbol appears in mathematical apparatus or side notes to indicate special subset cases. Third, in typographic revivals and specimens of the Miscellaneous Mathematical Symbols-A block, designers document historical usage and provide reference-scale glyphs for comparison and teaching. Across platforms, simple text rendering remains accessible and screen-reader friendly, with consistent semantic meaning and clear contrast for quick UI operations.
See our category page for related symbols.
Need styled alternatives? Try the Fancy Text tool.
Technical details
- Codepoint:
U+27C3 - General Category:
Sm - Age:
4.1 - Bidi Class:
ON - Block:
Miscellaneous Mathematical Symbols-A - Script:
Common - UTF-8:
E2 9F 83 - UTF-16:
27C3 - UTF-32:
000027C3 - HTML dec:
⟃ - HTML hex:
⟃ - JS escape:
\u27C3 - Python \N{}:
\N{OPEN SUBSET} - Python \u:
\u27C3 - Python \U:
\U000027C3 - URL-encoded:
%E2%9F%83 - CSS escape:
\27C3
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+27C3 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.