U+1F45 "ὅ" Greek Small Letter Omicron with Dasia and Oxia Unicode Character
Unicode Version 17.0
ὅ
U+1F45 "ὅ" Greek Small Letter Omicron with Dasia and Oxia is a representation of the Greek letter omicron combined with two diacritical marks: the dasia, which indicates rough breathing and is pronounced as an 'h' sound before the vowel, and the oxia, an acute accent denoting stress or a high pitch in Ancient Greek. This specific character is used in polytonic Greek orthography to transcribe words that require both a rough breathing mark and an acute accent, such as in the word "ὅτι" meaning "that" or "because." It belongs to the Greek Extended block of Unicode and is typically rendered in lowercase script, playing a crucial role in preserving the phonological distinctions of classical and liturgical Greek texts.
General Properties
| Code Point | U+1F45 |
| Version Added | 1.1 |
| Name | Greek Small Letter Omicron with Dasia and Oxia |
| Block | Greek Extended |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ὁ" U+1F41 Greek Small Letter Omicron with Dasia "́" U+0301 Combining Acute Accent |
Encodings
| HTML Decimal Encoding | ὅ |
| HTML Hex Encoding | ὅ |
| UTF-8 Encoding | 0xE1 0xBD 0x85 |
| UTF-16 Encoding | 0x1F45 |
| UTF-32 Encoding | 0x00001F45 |
| C/C++/Java Escape | \u1f45 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ὅ" U+1F4D Greek Capital Letter Omicron with Dasia and Oxia |
| Simple Titlecase Code Point | "Ὅ" U+1F4D Greek Capital Letter Omicron with Dasia and Oxia |
| Uppercase Code Point | "Ὅ" U+1F4D Greek Capital Letter Omicron with Dasia and Oxia |
| Titlecase Code Point | "Ὅ" U+1F4D Greek Capital Letter Omicron with Dasia and Oxia |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| 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 | Lower |