U+FD21 "ﴡ" Arabic Ligature Sad with Alef Maksura Final Form Unicode Character

Unicode Version 17.0

U+FD21 "ﴡ" Arabic Ligature Sad with Alef Maksura Final Form is a typographic ligature used in the Arabic script, specifically representing the combined forms of the letter Sad (ص) and the letter Alef Maksura (ى) when they appear together at the end of a word. This character belongs to the Arabic Presentation Forms-A block, which encodes precomposed ligatures designed to support calligraphic and typographic traditions where two characters are fused into a single glyph for aesthetic or readability reasons. Its use is primarily historical or stylistic, as modern digital text often relies on dynamic shaping by rendering engines rather than such precomposed forms.

General Properties

Code Point U+FD21
Version Added 1.1
Name Arabic Ligature Sad with Alef Maksura 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 "ص" U+0635 Arabic Letter Sad
"ى" U+0649 Arabic Letter Alef Maksura

Encodings

HTML Decimal Encoding ﴡ
HTML Hex Encoding ﴡ
UTF-8 Encoding 0xEF 0xB4 0xA1
UTF-16 Encoding 0xFD21
UTF-32 Encoding 0x0000FD21
C/C++/Java Escape \ufd21

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 "ص" U+0635 Arabic Letter Sad
"ى" U+0649 Arabic Letter Alef Maksura
NFKC Simple Casefold "ص" U+0635 Arabic Letter Sad
"ى" U+0649 Arabic Letter Alef Maksura
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