U+3189 "ㆉ" Hangul Letter Yo-I Unicode Character
Unicode Version 17.0
ㆉ
U+3189 "ㆉ" Hangul Letter Yo-I is a precomposed Hangul jamo representing a combination of the vowel 'yo' and the vowel 'i' in the Korean writing system, specifically used in the Hunminjeongeum era and in certain historical or linguistic contexts. This character is not used in modern standard Korean, which instead employs sequences of separate jamo to represent such diphthongs. Its presence in the Unicode standard ensures accurate digital representation of historical Korean texts and scholarly materials where this archaic compound vowel appears, preserving an important aspect of the language's phonological development for researchers and archivists.
General Properties
| Code Point | U+3189 |
| Version Added | 1.1 |
| Name | Hangul Letter Yo-I |
| Unicode 1.0 Name | Hangul Letter Yoi |
| Block | Hangul Compatibility Jamo |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "ᆈ" U+1188 Hangul Jungseong Yo-I |
Encodings
| HTML Decimal Encoding | ㆉ |
| HTML Hex Encoding | ㆉ |
| UTF-8 Encoding | 0xE3 0x86 0x89 |
| UTF-16 Encoding | 0x3189 |
| UTF-32 Encoding | 0x00003189 |
| C/C++/Java Escape | \u3189 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ᆈ" U+1188 Hangul Jungseong Yo-I |
| NFKC Simple Casefold | "ᆈ" U+1188 Hangul Jungseong Yo-I |
| Script | Hangul |
| Script Extensions | Hangul |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | OLetter |