This character is a Nonspacing Mark and is mainly used in the Kaithi script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+110B9 prohibits a line break before it.
The Wikipedia has the following information about this codepoint:
Virama (Sanskrit: विराम/हलन्त, romanized: virāma/halanta ्) is a Sanskrit phonological concept to suppress the inherent vowel that otherwise occurs with every consonant letter, commonly used as a generic term for a codepoint in Unicode, representing either
halanta, hasanta or explicit virāma, a diacritic in many Brahmic scripts, including the Devanagari and Bengali scripts, or
saṃyuktākṣara (Sanskrit: संयुक्ताक्षर) or implicit virama, a conjunct consonant or ligature.
Unicode schemes of scripts writing Mainland Southeast Asia languages, such as that of Burmese script and of Tibetan script, generally do not group the two functions together.
Representations
System
Representation (click value to copy)
Nº
69817
UTF-8
F0 91 82 B9
UTF-16
D8 04 DC B9
UTF-32
00 01 10 B9
URL-Quoted
%F0%91%82%B9
HTML hex reference
𑂹
Wrong windows-1252 Mojibake
◌𑂹
Encoding: GB18030 (hex bytes)
90 33 B3 31
RFC 5137
\u'110B9'
Bash and Zsh inside echo -e
\U000110B9
C and C++
\U000110B9
C#
\U000110B9
CSS
\0110B9
Excel
=UNICHAR(69817)
Go
\U000110B9
JavaScript
\uD804\uDCB9
Modern JavaScript since ES6
\u{110b9}
JSON
\uD804\uDCB9
Java
\uD804\uDCB9
Lua
\u{110B9}
Matlab
char(69817)
Perl
"\x{110B9}"
PHP
\u{110b9}
PostgreSQL
U&'\+0110B9'
PowerShell
`u{110B9}
Python
\U000110B9
Ruby
\u{110b9}
Rust
\u{110b9}
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