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+10903 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Dalet (dΔleth, also spelled Daleth or Daled) is the fourth letter of the Semitic abjads, including Arabic dΔlΨ―β, Aramaic dΔlaαΉ― π‘, Hebrew dΔletΧβ, Phoenician dΔlt π€ and Syriac dΔlaαΉ― ά. Its sound value is the voiced alveolar plosive ([d]).
The letter is based on a glyph of the Proto-Sinaitic script, probably called dalt "door" (door in Modern Hebrew is delet), ultimately based on a hieroglyph depicting a door:
Representations
System
Representation (click value to copy)
NΒΊ
67843
UTF-8
F0 90 A4 83
UTF-16
D8 02 DD 03
UTF-32
00 01 09 03
URL-Quoted
%F0%90%A4%83
HTML hex reference
𐤃
Wrong windows-1252 Mojibake
Γ°ΒΒ€Ζ
Encoding: GB18030 (hex bytes)
90 31 E9 37
RFC 5137
\u'10903'
Bash and Zsh inside echo -e
\U00010903
C and C++
\U00010903
C#
\U00010903
CSS
\010903
Excel
=UNICHAR(67843)
Go
\U00010903
JavaScript
\uD802\uDD03
Modern JavaScript since ES6
\u{10903}
JSON
\uD802\uDD03
Java
\uD802\uDD03
Lua
\u{10903}
Matlab
char(67843)
Perl
"\x{10903}"
PHP
\u{10903}
PostgreSQL
U&'\+010903'
PowerShell
`u{10903}
Python
\U00010903
Ruby
\u{10903}
Rust
\u{10903}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)