U+01D9 "Ǚ" Latin Capital Letter U with Diaeresis and Caron Unicode Character
Unicode Version 17.0
Ǚ
U+01D9 "Ǚ" Latin Capital Letter U with Diaeresis and Caron is a composite glyph used primarily in certain romanization systems and specialized orthographies, such as in the Pinyin romanization of Mandarin Chinese for specific phonological distinctions where it represents a high front rounded vowel with a rising tone. The diaeresis (two dots above the letter) modifies the base vowel sound, while the caron (a small v-shaped diacritic above the dots) indicates a specific tonal contour, typically the third or falling-rising tone in linguistic contexts. This character is rare in everyday writing and is more commonly encountered in linguistic notation, academic texts, or dictionaries where precise tonal and vowel representation is required.
General Properties
| Code Point | U+01D9 |
| Version Added | 1.1 |
| Name | Latin Capital Letter U with Diaeresis and Caron |
| Unicode 1.0 Name | Latin Capital Letter U Diaeresis Hacek |
| Block | Latin Extended-B |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Ü" U+00DC Latin Capital Letter U with Diaeresis "̌" U+030C Combining Caron |
Encodings
| HTML Decimal Encoding | Ǚ |
| HTML Hex Encoding | Ǚ |
| UTF-8 Encoding | 0xC7 0x99 |
| UTF-16 Encoding | 0x01D9 |
| UTF-32 Encoding | 0x000001D9 |
| C/C++/Java Escape | \u01d9 |
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 | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| Lowercase Code Point | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| Simple Case Folding | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| Case Folding | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| NFKC Simple Casefold | "ǚ" U+01DA Latin Small Letter U with Diaeresis and Caron |
| 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 |