U+00D4 "Ô" Latin Capital Letter O with Circumflex Unicode Character
U+00D4 "Ô" Latin Capital Letter O with Circumflex is a precomposed glyph used in several languages, most notably French, Portuguese, Vietnamese, and Romanian, where it represents a distinct vowel sound or indicates a specific historical vowel shift, such as the nasalized "o" in Portuguese or the closed "o" in French. It is formed by combining a base Latin capital letter O with a circumflex accent (ˆ), which historically marks the elision of a following 's' or a long vowel length in some orthographies. In the French language, for example, it appears in words like "hôpital" and "côte" to denote a particular pronunciation and differentiate meaning from similar words without the diacritic. The character is encoded in the Latin-1 Supplement block of Unicode, ensuring broad compatibility across digital systems and allowing for correct textual representation in both modern and historical texts.
General Properties
| Code Point | U+00D4 |
| Version Added | 1.1 |
| Name | Latin Capital Letter O with Circumflex |
| Unicode 1.0 Name | Latin Capital Letter O Circumflex |
| Block | Latin-1 Supplement |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "O" U+004F Latin Capital Letter O "̂" U+0302 Combining Circumflex Accent |
Encodings
| HTML Decimal Encoding | Ô |
| HTML Hex Encoding | Ô |
| UTF-8 Encoding | 0xC3 0x94 |
| UTF-16 Encoding | 0x00D4 |
| UTF-32 Encoding | 0x000000D4 |
| C/C++/Java Escape | \u00d4 |
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 | "ô" U+00F4 Latin Small Letter O with Circumflex |
| Lowercase Code Point | "ô" U+00F4 Latin Small Letter O with Circumflex |
| Simple Case Folding | "ô" U+00F4 Latin Small Letter O with Circumflex |
| Case Folding | "ô" U+00F4 Latin Small Letter O with Circumflex |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ô" U+00F4 Latin Small Letter O with Circumflex |
| NFKC Simple Casefold | "ô" U+00F4 Latin Small Letter O with Circumflex |
| 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 |