U+1E4E "Ṏ" Latin Capital Letter O with Tilde and Diaeresis Unicode Character
U+1E4E "Ṏ" Latin Capital Letter O with Tilde and Diaeresis is a rarely used composite glyph in the Latin script, designed for phonetic and orthographic transcriptions where a base letter O requires two diacritical marks simultaneously. The tilde above the letter indicates nasalization, while the diaeresis (a pair of dots) below the tilde signals that the vowel should be pronounced separately from a preceding or following vowel, or marks a specific phonetic quality. This character is part of the Latin Extended Additional block and may appear in linguistic texts or transliterations, such as in certain African languages or scholarly works, but it is not a standard letter in any modern writing system. Its usage is extremely limited, and it often relies on specialized fonts or Unicode-compliant software for correct display.
General Properties
| Code Point | U+1E4E |
| Version Added | 1.1 |
| Name | Latin Capital Letter O with Tilde and Diaeresis |
| Block | Latin Extended Additional |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Õ" U+00D5 Latin Capital Letter O with Tilde "̈" U+0308 Combining Diaeresis |
Encodings
| HTML Decimal Encoding | Ṏ |
| HTML Hex Encoding | Ṏ |
| UTF-8 Encoding | 0xE1 0xB9 0x8E |
| UTF-16 Encoding | 0x1E4E |
| UTF-32 Encoding | 0x00001E4E |
| C/C++/Java Escape | \u1e4e |
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 | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| Lowercase Code Point | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| Simple Case Folding | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| Case Folding | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| NFKC Simple Casefold | "ṏ" U+1E4F Latin Small Letter O with Tilde and Diaeresis |
| Script | Latin |
| Script Extensions | Latin |
| 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 |