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 not mirrored. The word that U+2263 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The CLDR project calls this character “strictly equivalent” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: equality, equivalent, mathematics, strictly.
The Wikipedia has the following information about this codepoint:
Mathematical Operators is a Unicode block containing characters for mathematical, logical, and set notation.
Notably absent are the plus sign (+), greater than sign (>) and less than sign (<), due to them already appearing in the Basic Latin Unicode block, and the plus-or-minus sign (±), multiplication sign (×) and obelus (÷), due to them already appearing in the Latin-1 Supplement block, although a distinct minus sign (−) is included, semantically different from the Basic Latin hyphen-minus (-).
Representations
System
Representation (click value to copy)
Nº
8803
UTF-8
E2 89 A3
UTF-16
22 63
UTF-32
00 00 22 63
URL-Quoted
%E2%89%A3
HTML hex reference
≣
Wrong windows-1252 Mojibake
≣
Encoding: GB18030 (hex bytes)
81 36 D8 38
RFC 5137
\u'2263'
Bash and Zsh inside echo -e
\u2263
C and C++
\u2263
C#
\u2263
CSS
\002263
Excel
=UNICHAR(8803)
Go
\u2263
JavaScript
\u2263
Modern JavaScript since ES6
\u{2263}
JSON
\u2263
Java
\u2263
Lua
\u{2263}
Matlab
char(8803)
Perl
"\x{2263}"
PHP
\u{2263}
PostgreSQL
U&'\2263'
PowerShell
`u{2263}
Python
\u2263
Ruby
\u{2263}
Rust
\u{2263}
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