U+1ED9 "ộ" Latin Small Letter O with Circumflex and Dot Below Unicode Character
Unicode Version 17.0
ộ
U+1ED9 "ộ" Latin Small Letter O with Circumflex and Dot Below is a composite glyph used primarily in the Vietnamese alphabet, where it represents the sound of the letter "o" with a circumflex accent that indicates a higher, more closed pronunciation combined with a dot below, which denotes a low, falling, glottalized tone. This character is formed by combining the base Latin small letter "o" with a combining circumflex accent above and a combining dot below, making it essential for accurately writing Vietnamese words such as "cộng" meaning "plus" or "bộ" meaning "set" or "ministry." Its inclusion in Unicode ensures proper digital representation and text processing for the Vietnamese language across various platforms and systems.
General Properties
| Code Point | U+1ED9 |
| Version Added | 1.1 |
| Name | Latin Small Letter O with Circumflex and Dot Below |
| Block | Latin Extended Additional |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ọ" U+1ECD Latin Small Letter O with Dot Below "̂" U+0302 Combining Circumflex Accent |
Encodings
| HTML Decimal Encoding | ộ |
| HTML Hex Encoding | ộ |
| UTF-8 Encoding | 0xE1 0xBB 0x99 |
| UTF-16 Encoding | 0x1ED9 |
| UTF-32 Encoding | 0x00001ED9 |
| C/C++/Java Escape | \u1ed9 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ộ" U+1ED8 Latin Capital Letter O with Circumflex and Dot Below |
| Simple Titlecase Code Point | "Ộ" U+1ED8 Latin Capital Letter O with Circumflex and Dot Below |
| Uppercase Code Point | "Ộ" U+1ED8 Latin Capital Letter O with Circumflex and Dot Below |
| Titlecase Code Point | "Ộ" U+1ED8 Latin Capital Letter O with Circumflex and Dot Below |
| 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 |