This character is a Other Letter and is mainly used in the Gothic script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+10348 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Hwair (also Ζair, huuair, hvair) is the name of π, the Gothic letter expressing the [hΚ·] or [Κ] sound (reflected in English by the inverted wh-spelling for [Κ]). Hwair is also the name of the Latin ligature Ζ (capital ΗΆ) used to transcribe Gothic.
Representations
System
Representation (click value to copy)
NΒΊ
66376
UTF-8
F0 90 8D 88
UTF-16
D8 00 DF 48
UTF-32
00 01 03 48
URL-Quoted
%F0%90%8D%88
HTML hex reference
𐍈
Wrong windows-1252 Mojibake
Γ°ΒΒΛ
Encoding: GB18030 (hex bytes)
90 30 D5 30
RFC 5137
\u'10348'
Bash and Zsh inside echo -e
\U00010348
C and C++
\U00010348
C#
\U00010348
CSS
\010348
Excel
=UNICHAR(66376)
Go
\U00010348
JavaScript
\uD800\uDF48
Modern JavaScript since ES6
\u{10348}
JSON
\uD800\uDF48
Java
\uD800\uDF48
Lua
\u{10348}
Matlab
char(66376)
Perl
"\x{10348}"
PHP
\u{10348}
PostgreSQL
U&'\+010348'
PowerShell
`u{10348}
Python
\U00010348
Ruby
\u{10348}
Rust
\u{10348}
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