U+A66C "Ꙭ" Cyrillic Capital Letter Double Monocular O Unicode Character
Unicode Version 17.0
Ꙭ
U+A66C "Ꙭ" Cyrillic Capital Letter Double Monocular O is a rare glyph found in the Cyrillic script, specifically used in historical or extended Cyrillic contexts such as Old Church Slavonic or certain early Slavic manuscripts. It consists of two connected "O" shapes, often employed as a variant of the standard Cyrillic O or to represent the sound /o/ in specific orthographic traditions. This character belongs to the Cyrillic Extended-B block, which encompasses letters for diverse early Slavic languages and dialects, and it is notably absent from modern standardized alphabets, making it primarily of interest to scholars of historical linguistics and paleography.
General Properties
| Code Point | U+A66C |
| Version Added | 5.1 |
| Name | Cyrillic Capital Letter Double Monocular O |
| Block | Cyrillic Extended-B |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | Ꙭ |
| HTML Hex Encoding | Ꙭ |
| UTF-8 Encoding | 0xEA 0x99 0xAC |
| UTF-16 Encoding | 0xA66C |
| UTF-32 Encoding | 0x0000A66C |
| C/C++/Java Escape | \ua66c |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| Lowercase Code Point | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| Simple Case Folding | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| Case Folding | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| NFKC Simple Casefold | "ꙭ" U+A66D Cyrillic Small Letter Double Monocular O |
| Script | Cyrillic |
| Script Extensions | Cyrillic |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Upper |