U+01D6 "ǖ" Latin Small Letter U with Diaeresis and Macron Unicode Character
U+01D6 "ǖ" Latin Small Letter U with Diaeresis and Macron is a composite glyph used primarily in the Pinyin romanization system for Mandarin Chinese to represent the high level tone of the vowel "ü", which itself denotes the close front rounded vowel sound. This character combines a Latin small letter u with a diaeresis (the two dots above) and a macron (a horizontal line above the dots), the diaeresis distinguishing the vowel from a plain "u" in contexts like "nǖ" versus "nu", while the macron indicates the first tone. It is coded separately in Unicode to allow straightforward representation of this tonal variant in digital text, avoiding the need for combining diacritical marks, and it finds use in linguistic texts, language learning materials, and any system requiring precise phonetic transcription of Standard Chinese.
General Properties
| Code Point | U+01D6 |
| Version Added | 1.1 |
| Name | Latin Small Letter U with Diaeresis and Macron |
| Unicode 1.0 Name | Latin Small Letter U Diaeresis Macron |
| Block | Latin Extended-B |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ü" U+00FC Latin Small Letter U with Diaeresis "̄" U+0304 Combining Macron |
Encodings
| HTML Decimal Encoding | ǖ |
| HTML Hex Encoding | ǖ |
| UTF-8 Encoding | 0xC7 0x96 |
| UTF-16 Encoding | 0x01D6 |
| UTF-32 Encoding | 0x000001D6 |
| C/C++/Java Escape | \u01d6 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| East Asian Width | Ambiguous |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ǖ" U+01D5 Latin Capital Letter U with Diaeresis and Macron |
| Simple Titlecase Code Point | "Ǖ" U+01D5 Latin Capital Letter U with Diaeresis and Macron |
| Uppercase Code Point | "Ǖ" U+01D5 Latin Capital Letter U with Diaeresis and Macron |
| Titlecase Code Point | "Ǖ" U+01D5 Latin Capital Letter U with Diaeresis and Macron |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| 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 | Lower |