U+1F39 "Ἱ" Greek Capital Letter Iota with Dasia Unicode Character
Unicode Version 17.0
Ἱ
U+1F39 "Ἱ" Greek Capital Letter Iota with Dasia is a precomposed representation of the Greek letter iota combined with a dasia, or rough breathing mark, indicating an initial aspirated h sound in ancient Greek. This character is used in polytonic Greek orthography, which employs diacritics to denote pronunciation details lost in modern monotonic Greek. Specifically, when appearing at the beginning of a word, the dasia over the iota signals that the word should be pronounced with a breathy onset, similar to the English h sound, making it distinct from the smooth breathing counterpart. As part of the Unicode standard, this character facilitates accurate representation and digital preservation of classical and scholarly Greek texts.
General Properties
| Code Point | U+1F39 |
| Version Added | 1.1 |
| Name | Greek Capital Letter Iota with Dasia |
| Block | Greek Extended |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Ι" U+0399 Greek Capital Letter Iota "̔" U+0314 Combining Reversed Comma Above |
Encodings
| HTML Decimal Encoding | Ἱ |
| HTML Hex Encoding | Ἱ |
| UTF-8 Encoding | 0xE1 0xBC 0xB9 |
| UTF-16 Encoding | 0x1F39 |
| UTF-32 Encoding | 0x00001F39 |
| C/C++/Java Escape | \u1f39 |
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 | "ἱ" U+1F31 Greek Small Letter Iota with Dasia |
| Lowercase Code Point | "ἱ" U+1F31 Greek Small Letter Iota with Dasia |
| Simple Case Folding | "ἱ" U+1F31 Greek Small Letter Iota with Dasia |
| Case Folding | "ἱ" U+1F31 Greek Small Letter Iota with Dasia |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ἱ" U+1F31 Greek Small Letter Iota with Dasia |
| NFKC Simple Casefold | "ἱ" U+1F31 Greek Small Letter Iota 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 |