This character is a Other Letter and is mainly used in the Phoenician script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from right to left. When changing direction it is not mirrored. The word that U+1090D forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Nun is the fourteenth letter of the Semitic abjads, including Arabic nΕ«nΩβ, Aramaic nΕ«n π‘, Hebrew nΕ«nΧ β, Phoenician nΕ«n π€β, and Syriac nΕ«n ά’,. Its numerical value is 50. It is the third letter in Thaana (ή), pronounced as "noonu". In all languages, it represents the alveolar nasal /n/.
The Phoenician letter gave rise to the Greek nu (Ξ), Etruscan , Latin N, and Cyrillic Π.
Representations
System
Representation (click value to copy)
NΒΊ
67853
UTF-8
F0 90 A4 8D
UTF-16
D8 02 DD 0D
UTF-32
00 01 09 0D
URL-Quoted
%F0%90%A4%8D
HTML hex reference
𐤍
Wrong windows-1252 Mojibake
Γ°ΒΒ€Β
Encoding: GB18030 (hex bytes)
90 31 EA 37
RFC 5137
\u'1090D'
Bash and Zsh inside echo -e
\U0001090D
C and C++
\U0001090D
C#
\U0001090D
CSS
\01090D
Excel
=UNICHAR(67853)
Go
\U0001090D
JavaScript
\uD802\uDD0D
Modern JavaScript since ES6
\u{1090d}
JSON
\uD802\uDD0D
Java
\uD802\uDD0D
Lua
\u{1090D}
Matlab
char(67853)
Perl
"\x{1090D}"
PHP
\u{1090d}
PostgreSQL
U&'\+01090D'
PowerShell
`u{1090D}
Python
\U0001090D
Ruby
\u{1090d}
Rust
\u{1090d}
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