Home U+4E00 to U+9FFF CJK Unified Ideographs
Glyph for U+81A4
Source: Noto CJK

U+81A4 CJK Unified Ideo­graph-​81A4

U+81A4 was added in Unicode version 1.1 in 1993. It belongs to the block U+4E00 to U+9FFF CJK Unified Ideographs in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Letter and is mainly used in the Han script.

The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+81A4 offers a line break opportunity at its position, except in some numeric contexts.

This is a so-called Kanji ghost character or 幽霊文字 (Yūrei Moji). It was erroneously added to the JIS standard in 1978 and doesn’t have any real-world use. See this post and this entry for a discussion. The ghost characters are: U+7A43, U+7CAB, U+6327, U+6A78, U+81A4, U+88AE, U+95A0, U+599B, U+6683, U+6926, U+8EC5, U+9D48, U+6077, U+78B5, U+99F2, U+58B8, U+58E5, U+5F41, U+87D0, and U+69DE.

Representations

System Representation
Nº 33188
UTF-8 E8 86 A4
UTF-16 81 A4
UTF-32 00 00 81 A4
URL-Quoted %E8%86%A4
HTML hex reference 膤
Wrong windows-1252 Mojibake 膤
Encoding: JIS0208 (hex bytes) E7 B3

Elsewhere

Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) CJK UNIFIED IDEOGRAPH-81A4
Unicode 1 Name (na1) —
Block (blk) CJK Unified Ideographs
General Category (gc) Other Letter
Script (sc) Han
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+81A4 CJK Unified Ideograph-81A4
Lowercase (Lower) ✘
Simple Lowercase Mapping (slc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Lowercase Mapping (lc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Uppercase (Upper) ✘
Simple Uppercase Mapping (suc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Uppercase Mapping (uc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Simple Titlecase Mapping (stc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Titlecase Mapping (tc) Glyph for U+81A4 CJK Unified Ideograph-81A4
Case Folding (cf) Glyph for U+81A4 CJK Unified Ideograph-81A4
ASCII Hex Digit (AHex) ✘
Alphabetic (Alpha) ✔
Bidi Control (Bidi_C) ✘
Bidi Mirrored (Bidi_M) ✘
Composition Exclusion (CE) ✘
Case Ignorable (CI) ✘
Changes When Casefolded (CWCF) ✘
Changes When Casemapped (CWCM) ✘
Changes When NFKC Casefolded (CWKCF) ✘
Changes When Lowercased (CWL) ✘
Changes When Titlecased (CWT) ✘
Changes When Uppercased (CWU) ✘
Cased (Cased) ✘
Full Composition Exclusion (Comp_Ex) ✘
Default Ignorable Code Point (DI) ✘
Dash (Dash) ✘
Deprecated (Dep) ✘
Diacritic (Dia) ✘
Emoji Modifier Base (EBase) ✘
Emoji Component (EComp) ✘
Emoji Modifier (EMod) ✘
Emoji Presentation (EPres) ✘
Emoji (Emoji) ✘
Extender (Ext) ✘
Extended Pictographic (ExtPict) ✘
FC NFKC Closure (FC_NFKC) Glyph for U+81A4 CJK Unified Ideograph-81A4
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base) ✔
Grapheme Extend (Gr_Ext) ✘
Grapheme Link (Gr_Link) ✘
Hex Digit (Hex) ✘
Hyphen (Hyphen) ✘
ID Continue (IDC) ✔
ID Start (IDS) ✔
IDS Binary Operator (IDSB) ✘
IDS Trinary Operator and (IDST) ✘
IDSU (IDSU) 0
ID_Compat_Math_Continue (ID_Compat_Math_Continue) 0
ID_Compat_Math_Start (ID_Compat_Math_Start) 0
Ideographic (Ideo) ✔
InCB (InCB) None
Indic Mantra Category (InMC) —
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
Jamo Short Name (JSN) —
Join Control (Join_C) ✘
Logical Order Exception (LOE) ✘
Math (Math) ✘
Noncharacter Code Point (NChar) ✘
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) Glyph for U+81A4 CJK Unified Ideograph-81A4
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+81A4 CJK Unified Ideograph-81A4
NFKD Quick Check (NFKD_QC) Yes
Other Alphabetic (OAlpha) ✘
Other Default Ignorable Code Point (ODI) ✘
Other Grapheme Extend (OGr_Ext) ✘
Other ID Continue (OIDC) ✘
Other ID Start (OIDS) ✘
Other Lowercase (OLower) ✘
Other Math (OMath) ✘
Other Uppercase (OUpper) ✘
Prepended Concatenation Mark (PCM) ✘
Pattern Syntax (Pat_Syn) ✘
Pattern White Space (Pat_WS) ✘
Quotation Mark (QMark) ✘
Regional Indicator (RI) ✘
Radical (Radical) ✘
Sentence Break (SB) Other Letter
Soft Dotted (SD) ✘
Sentence Terminal (STerm) ✘
Terminal Punctuation (Term) ✘
Unified Ideograph (UIdeo) ✔
Variation Selector (VS) ✘
Word Break (WB) Other
White Space (WSpace) ✘
XID Continue (XIDC) ✔
XID Start (XIDS) ✔
Expands On NFC (XO_NFC) ✘
Expands On NFD (XO_NFD) ✘
Expands On NFKC (XO_NFKC) ✘
Expands On NFKD (XO_NFKD) ✘
Bidi Paired Bracket (bpb) Glyph for U+81A4 CJK Unified Ideograph-81A4
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) wide
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc) —
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Ideographic
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+81A4 CJK Unified Ideograph-81A4
Script Extension (scx)
Vertical Orientation (vo) U
Cangjie Input Code (kCangjie) BMBS
kCantonese (kCantonese) syut3
kEACC (kEACC) 696733
kFourCornerCode (kFourCornerCode) 7127.4 7127.7
kHanYu (kHanYu) 32107.031
kIRGHanyuDaZidian (kIRGHanyuDaZidian) 32107.031
kIRGKangXi (kIRGKangXi) 0993.201
kIRG_GSource (kIRG_GSource) GE-486E
kIRG_JSource (kIRG_JSource) J0-6733
kJapanese (kJapanese) ゆき
kJapaneseKun (kJapaneseKun) TARA
kJis0 (kJis0) 7119
kKangXi (kKangXi) 0993.201
kMandarin (kMandarin) xuě
kMojiJoho (kMojiJoho) MJ021214 MJ021214:E0101 MJ021215:E0102
kMorohashi (kMorohashi) H247 H247:E0101
kPhonetic (kPhonetic) 1248*
Radical Stroke Count (Adobe Japan 1-6) (kRSAdobe_Japan1_6) C+6270+74.4.11 C+6270+130.4.11
Radical Stroke Count (Unicode) (kRSUnicode) 74.11
Stroke Number (kTotalStrokes) 15
UnihanCore2020 Set (kUnihanCore2020) J