U+FB51 "ﭑ" Arabic Letter Alef Wasla Final Form Unicode Character
Unicode Version 17.0
ﭑ
U+FB51 "ﭑ" Arabic Letter Alef Wasla Final Form is a presentation form of the Arabic letter alef with a wasla diacritic designed specifically for the final position in a word. This character is used in the Arabic script to indicate the glottal stop or initial vowel sound when it occurs at the end of a word, such as in the definite article or certain prefixes, and it appears as a precursor to an unwritten hamza in specific orthographic contexts. It is part of the Arabic Presentation Forms-B block, which includes contextual glyph variants to support proper ligature shaping in complex text layout.
General Properties
| Code Point | U+FB51 |
| Version Added | 1.1 |
| Name | Arabic Letter Alef Wasla Final Form |
| Block | Arabic Presentation Forms-A |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Arabic Letter |
| Decomposition Type | Final |
| Decomposition Mapping | "ٱ" U+0671 Arabic Letter Alef Wasla |
Encodings
| HTML Decimal Encoding | ﭑ |
| HTML Hex Encoding | ﭑ |
| UTF-8 Encoding | 0xEF 0xAD 0x91 |
| UTF-16 Encoding | 0xFB51 |
| UTF-32 Encoding | 0x0000FB51 |
| C/C++/Java Escape | \ufb51 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ٱ" U+0671 Arabic Letter Alef Wasla |
| NFKC Simple Casefold | "ٱ" U+0671 Arabic Letter Alef Wasla |
| Script | Arabic |
| Script Extensions | Arabic |
| 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 | OLetter |