0x186E

0x186E is the hexadecimal notation for the Unicode code point U+186E, which corresponds to the Mongolian letter “O”. It belongs to the Mongolian block, a range of characters from U+1800 to U+18AF that was added to the Unicode Standard in version 3.0 (2000). The character is classified as a “Letter, Other” (Lo) in the Unicode general category and has the official name MONGOLIAN LETTER O. In the Mongolian script it represents the vowel sound /o/ and is used in the traditional vertical writing system employed for the Mongolian language, as well as for related languages such as Buryat and Kalmyk.

In UTF‑8 encoding, U+186E is represented by the three‑byte sequence E1 A1 AE. In UTF‑16 it occupies a single 16‑bit code unit 0x186E. The character has no decomposition mapping and is not included in any case‑mapping tables, as Mongolian script does not use case distinctions. Font support for 0x186E depends on the availability of Mongolian‑compatible typefaces; common open‑source fonts such as Noto Sans Mongolian and DejaVu Sans Mono provide glyphs for this code point.

The Unicode character is indexed in the Unicode Character Database with the script property “Mongolian” and may appear in text processing, linguistic research, and digital encoding of Mongolian manuscripts. Its inclusion ensures that modern software can accurately render and manipulate native Mongolian orthography.