U+3180 "ㆀ" Hangul Letter Ssangieung Unicode Character
Unicode Version 17.0
ㆀ
U+3180 "ㆀ" Hangul Letter Ssangieung is a historic or obsolete Hangul jamo representing a doubled or fortis pronunciation of the Korean consonant “ieung,” which in modern Hangul is silent when used as an initial consonant but originally denoted a glottal stop. This character belongs to the Hangul Compatibility Jamo block, a set of precomposed letters designed for compatibility with older Korean encoding standards. In modern Korean typography and digital text, ㆀ is rarely used outside of linguistic studies, historical documents, or specialized phonetic transcriptions, as the standard modern Hangul system does not employ such a distinct letter for that sound.
General Properties
| Code Point | U+3180 |
| Version Added | 1.1 |
| Name | Hangul Letter Ssangieung |
| Unicode 1.0 Name | Hangul Letter Ssang Ieung |
| Block | Hangul Compatibility Jamo |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "ᅇ" U+1147 Hangul Choseong Ssangieung |
Encodings
| HTML Decimal Encoding | ㆀ |
| HTML Hex Encoding | ㆀ |
| UTF-8 Encoding | 0xE3 0x86 0x80 |
| UTF-16 Encoding | 0x3180 |
| UTF-32 Encoding | 0x00003180 |
| C/C++/Java Escape | \u3180 |
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 | "ᅇ" U+1147 Hangul Choseong Ssangieung |
| NFKC Simple Casefold | "ᅇ" U+1147 Hangul Choseong Ssangieung |
| 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 |