This character is a Other Letter and is mainly used in the Lisu 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+A4D8 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In baseball or softball, a strikeout (or strike-out) occurs when a batter accumulates three strikes during a time at bat. It means the batter is out, unless the third strike is not caught by the catcher and the batter reaches first base safely as a result. A strikeout is a statistic recorded for both pitchers and batters, and is usually denoted by the letter K, or sometimes by the initialism SO. A "strikeout looking"—in which the batter does not swing and the third strike is called by the umpire—may be denoted by an inverted K (i.e. ꓘ).
Although a strikeout suggests that the pitcher dominated the batter, the free-swinging style that generates home runs also leaves batters susceptible to striking out. Some of the most prolific home run hitters of all time (such as Mickey Mantle, Reggie Jackson, and Jim Thome) were notorious for striking out often. Notably, Jackson and Thome respectively hold the major league records for most and second most times struck out in a career.
Representations
System
Representation (click value to copy)
Nº
42200
UTF-8
EA 93 98
UTF-16
A4 D8
UTF-32
00 00 A4 D8
URL-Quoted
%EA%93%98
HTML hex reference
ꓘ
Wrong windows-1252 Mojibake
ꓘ
Encoding: GB18030 (hex bytes)
82 36 96 33
RFC 5137
\u'A4D8'
Bash and Zsh inside echo -e
\uA4D8
C and C++
\uA4D8
C#
\uA4D8
CSS
\00A4D8
Excel
=UNICHAR(42200)
Go
\uA4D8
JavaScript
\uA4D8
Modern JavaScript since ES6
\u{a4d8}
JSON
\uA4D8
Java
\uA4D8
Lua
\u{A4D8}
Matlab
char(42200)
Perl
"\x{A4D8}"
PHP
\u{a4d8}
PostgreSQL
U&'\A4D8'
PowerShell
`u{A4D8}
Python
\uA4D8
Ruby
\u{a4d8}
Rust
\u{a4d8}
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