This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored into Square Image Of. The word that U+2290 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
Representations
System
Representation (click value to copy)
Nº
8848
UTF-8
E2 8A 90
UTF-16
22 90
UTF-32
00 00 22 90
URL-Quoted
%E2%8A%90
HTML hex reference
⊐
Wrong windows-1252 Mojibake
âŠ
HTML named entity
⊐
HTML named entity
⊐
HTML named entity
⊐
Encoding: GB18030 (hex bytes)
81 36 DC 37
LATEX
\sqsupset
RFC 5137
\u'2290'
Bash and Zsh inside echo -e
\u2290
C and C++
\u2290
C#
\u2290
CSS
\002290
Excel
=UNICHAR(8848)
Go
\u2290
JavaScript
\u2290
Modern JavaScript since ES6
\u{2290}
JSON
\u2290
Java
\u2290
Lua
\u{2290}
Matlab
char(8848)
Perl
"\x{2290}"
PHP
\u{2290}
PostgreSQL
U&'\2290'
PowerShell
`u{2290}
Python
\u2290
Ruby
\u{2290}
Rust
\u{2290}
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