U+FAA4 "瘝" CJK Compatibility Ideograph-# Unicode Character

Unicode Version 17.0

U+FAA4 "瘝" CJK Compatibility Ideograph-# is a compatibility ideograph found within the CJK Compatibility Ideographs block, specifically encoded to represent a variant or duplicate form of a standard CJK character for round-trip compatibility with older East Asian character set standards, such as those used in legacy Chinese, Japanese, or Korean encoding systems. It does not have an independent modern semantic meaning or common usage in contemporary text but exists solely to preserve the exact mapping of characters from pre-Unicode standards to ensure that documents encoded in those older systems can be faithfully converted without loss of information. The glyph itself is defined by its compatibility decomposition mapping, which points to its unified CJK counterpart, but in practice, this character is rarely used in everyday writing and primarily serves historical and technical compatibility purposes in specialized digital archives or font implementations.

General Properties

Code Point U+FAA4
Version Added 4.1
Name CJK Compatibility Ideograph-#
Block CJK Compatibility Ideographs
General Category Other Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Canonical
Decomposition Mapping "瘝" U+761D CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding 瘝
HTML Hex Encoding 瘝
UTF-8 Encoding 0xEF 0xAA 0xA4
UTF-16 Encoding 0xFAA4
UTF-32 Encoding 0x0000FAA4
C/C++/Java Escape \ufaa4

Unicode Properties

Full Composition Exclusion Yes
Numeric Type None
Numeric Value NaN
Line Break Ideographic
East Asian Width Wide
Changes When NFKC Casefolded Yes
NFKC Casefold "瘝" U+761D CJK Unified Ideograph-#
NFKC Simple Casefold "瘝" U+761D CJK Unified Ideograph-#
Script Han
Script Extensions Han
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Vertical Orientation Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Other
Sentence Break OLetter
Ideographic Yes

Unihan Properties

kCompatibilityVariant U+761D
kIRG_KPSource KP1-5BF5
kRSUnicode 104.10
kTotalStrokes 14