U+1E8C "Ẍ" Latin Capital Letter X with Diaeresis Unicode Character
U+1E8C "Ẍ" Latin Capital Letter X with Diaeresis is a specialized glyph used primarily in transliteration and linguistic notation, representing the letter X modified with a diaeresis or umlaut to indicate a distinct phonetic value, such as a voiceless velar fricative or a separate syllable boundary, depending on the writing system. It is rarely used in standard modern languages but appears in historical or scholarly texts, such as those for Old Norse or in the transcription of certain African languages, where the diaeresis clarifies pronunciation or distinguishes the character from the plain X. This character is encoded in the Latin Extended Additional block of Unicode, ensuring compatibility across digital platforms for precise orthographic representation.
General Properties
| Code Point | U+1E8C |
| Version Added | 1.1 |
| Name | Latin Capital Letter X with Diaeresis |
| Block | Latin Extended Additional |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "X" U+0058 Latin Capital Letter X "̈" U+0308 Combining Diaeresis |
Encodings
| HTML Decimal Encoding | Ẍ |
| HTML Hex Encoding | Ẍ |
| UTF-8 Encoding | 0xE1 0xBA 0x8C |
| UTF-16 Encoding | 0x1E8C |
| UTF-32 Encoding | 0x00001E8C |
| C/C++/Java Escape | \u1e8c |
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 | "ẍ" U+1E8D Latin Small Letter X with Diaeresis |
| Lowercase Code Point | "ẍ" U+1E8D Latin Small Letter X with Diaeresis |
| Simple Case Folding | "ẍ" U+1E8D Latin Small Letter X with Diaeresis |
| Case Folding | "ẍ" U+1E8D Latin Small Letter X with Diaeresis |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ẍ" U+1E8D Latin Small Letter X with Diaeresis |
| NFKC Simple Casefold | "ẍ" U+1E8D Latin Small Letter X with 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 |