U+1F49 "Ὁ" Greek Capital Letter Omicron with Dasia Unicode Character
Unicode Version 17.0
Ὁ
U+1F49 "Ὁ" Greek Capital Letter Omicron with Dasia is a historical Greek letter used in ancient and polytonic Greek orthography, consisting of the capital omicron combined with a dasia, or rough breathing mark, which indicates an initial aspiration or "h" sound before the vowel, making it equivalent to the sound "ho" in English. This character appears primarily in ancient Greek texts, often at the beginning of words, to denote the aspirated pronunciation that distinguishes it from the smooth breathing version without the mark. As part of the Unicode standard, it supports accurate digital representation of classical Greek script, preserving the nuanced phonetic distinctions of ancient writing.
General Properties
| Code Point | U+1F49 |
| Version Added | 1.1 |
| Name | Greek Capital Letter Omicron with Dasia |
| Block | Greek Extended |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Ο" U+039F Greek Capital Letter Omicron "̔" U+0314 Combining Reversed Comma Above |
Encodings
| HTML Decimal Encoding | Ὁ |
| HTML Hex Encoding | Ὁ |
| UTF-8 Encoding | 0xE1 0xBD 0x89 |
| UTF-16 Encoding | 0x1F49 |
| UTF-32 Encoding | 0x00001F49 |
| C/C++/Java Escape | \u1f49 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| Lowercase Code Point | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| Simple Case Folding | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| Case Folding | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| NFKC Simple Casefold | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia |
| Script | Greek |
| Script Extensions | Greek |
| 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 |