This character is a Other Symbol and is mainly used in the Coptic 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+2CE8 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
The staurogram (⳨), also monogrammatic cross or tau-rho, is a ligature composed of a superposition of the Greek letters tau (Τ) and rho (Ρ).
Representations
System
Representation (click value to copy)
Nº
11496
UTF-8
E2 B3 A8
UTF-16
2C E8
UTF-32
00 00 2C E8
URL-Quoted
%E2%B3%A8
HTML hex reference
⳨
Wrong windows-1252 Mojibake
⳨
Encoding: GB18030 (hex bytes)
81 38 D5 30
RFC 5137
\u'2CE8'
Bash and Zsh inside echo -e
\u2CE8
C and C++
\u2CE8
C#
\u2CE8
CSS
\002CE8
Excel
=UNICHAR(11496)
Go
\u2CE8
JavaScript
\u2CE8
Modern JavaScript since ES6
\u{2ce8}
JSON
\u2CE8
Java
\u2CE8
Lua
\u{2CE8}
Matlab
char(11496)
Perl
"\x{2CE8}"
PHP
\u{2ce8}
PostgreSQL
U&'\2CE8'
PowerShell
`u{2CE8}
Python
\u2CE8
Ruby
\u{2ce8}
Rust
\u{2ce8}
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