U+1FD9 "Ῑ" Greek Capital Letter Iota with Macron Unicode Character
Unicode Version 17.0
Ῑ
U+1FD9 "Ῑ" Greek Capital Letter Iota with Macron is a precomposed character used in the Greek script, specifically representing an uppercase iota with a macron diacritic that indicates a long vowel sound. It is part of the Greek and Coptic block and is utilized in academic and linguistic contexts for the accurate transliteration or transcription of Ancient Greek, where vowel length is phonemically significant. This character is distinct from a regular iota combined with a combining macron, providing a single code point for easier text processing and rendering, particularly in polytonic Greek writing systems.
General Properties
| Code Point | U+1FD9 |
| Version Added | 1.1 |
| Name | Greek Capital Letter Iota with Macron |
| 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+0304 Combining Macron |
Encodings
| HTML Decimal Encoding | Ῑ |
| HTML Hex Encoding | Ῑ |
| UTF-8 Encoding | 0xE1 0xBF 0x99 |
| UTF-16 Encoding | 0x1FD9 |
| UTF-32 Encoding | 0x00001FD9 |
| C/C++/Java Escape | \u1fd9 |
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 | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| Lowercase Code Point | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| Simple Case Folding | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| Case Folding | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| NFKC Simple Casefold | "ῑ" U+1FD1 Greek Small Letter Iota with Macron |
| 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 |