U+1EAC "Ậ" Latin Capital Letter A with Circumflex and Dot Below Unicode Character
U+1EAC "Ậ" Latin Capital Letter A with Circumflex and Dot Below is a precomposed character used in the standardized orthography of several languages, most notably in Vietnamese, where it represents the vowel sound /ə/ (approximately like the "u" in "but") with both a rising or falling tone contour indicated by the circumflex and a low or heavy tone marked by the dot below. This diacritic combination allows the character to distinguish specific tonal and phonetic nuances in written Vietnamese, and it is also employed in some African languages such as Ngbaka and in certain scholarly romanization systems. The character is encoded in the Unicode Latin Extended Additional block and is visually constructed by combining a base Latin capital A, a circumflex accent above, and a combining dot below, ensuring proper text rendering in digital environments.
General Properties
| Code Point | U+1EAC |
| Version Added | 1.1 |
| Name | Latin Capital Letter A with Circumflex and Dot Below |
| Block | Latin Extended Additional |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Ạ" U+1EA0 Latin Capital Letter A with Dot Below "̂" U+0302 Combining Circumflex Accent |
Encodings
| HTML Decimal Encoding | Ậ |
| HTML Hex Encoding | Ậ |
| UTF-8 Encoding | 0xE1 0xBA 0xAC |
| UTF-16 Encoding | 0x1EAC |
| UTF-32 Encoding | 0x00001EAC |
| C/C++/Java Escape | \u1eac |
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 | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| Lowercase Code Point | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| Simple Case Folding | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| Case Folding | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| NFKC Simple Casefold | "ậ" U+1EAD Latin Small Letter A with Circumflex and Dot Below |
| 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 |