Home U+0300 to U+036F Combining Diacritical Marks
Glyph for U+0331
Source: Noto Sans

U+0331 Combining Macron Below

U+0331 was added in Unicode version 1.1 in 1993. It belongs to the block U+0300 to U+036F Combining Diacritical Marks in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and inherits its script property from the preceding character. It is also used in the scripts Caucasian Albanian, Cherokee, Gothic, Latin, Sunu, Thai.

The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+0331 prohibits a line break before it. The glyph can be confused with 3 other glyphs.

The Wikipedia has the following information about this codepoint:

Macron below is a combining diacritical mark that is used in various orthographies.

A non-combining form is U+02CD ˍ MODIFIER LETTER LOW MACRON. It is not to be confused with U+0320 ◌̠ COMBINING MINUS SIGN BELOW, U+0332 ◌̲ COMBINING LOW LINE and U+005F _ LOW LINE. The difference between "macron below" and "low line" is that the latter results in an unbroken underline when it is run together: compare a̱ḇc̱ and a̲b̲c̲ (only the latter should look like abc).


Representations

System Representation
Nº 817
UTF-8 CC B1
UTF-16 03 31
UTF-32 00 00 03 31
URL-Quoted %CC%B1
HTML hex reference ̱
Wrong windows-1252 Mojibake ◌̱
Encoding: GB18030 (hex bytes) 81 30 C1 35
AGL: Latin-4 uni0331
AGL: Latin-5 uni0331
Adobe Glyph List macronbelowcmb

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) COMBINING MACRON BELOW
Unicode 1 Name (na1) NON-SPACING MACRON BELOW
Block (blk) Combining Diacritical Marks
General Category (gc) Nonspacing Mark
Script (sc) Inherited
Bidirectional Category (bc) Nonspacing Mark
Combining Class (ccc) Below
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+0331 Combining Macron Below
Lowercase (Lower) ✘
Simple Lowercase Mapping (slc) Glyph for U+0331 Combining Macron Below
Lowercase Mapping (lc) Glyph for U+0331 Combining Macron Below
Uppercase (Upper) ✘
Simple Uppercase Mapping (suc) Glyph for U+0331 Combining Macron Below
Uppercase Mapping (uc) Glyph for U+0331 Combining Macron Below
Simple Titlecase Mapping (stc) Glyph for U+0331 Combining Macron Below
Titlecase Mapping (tc) Glyph for U+0331 Combining Macron Below
Case Folding (cf) Glyph for U+0331 Combining Macron Below
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+0331 Combining Macron Below
Grapheme Cluster Break (GCB) Extend
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) Extend
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) ✘
Modifier Combining Mark (MCM) ✘
Math (Math) ✘
Noncharacter Code Point (NChar) ✘
NFC Quick Check (NFC_QC) Maybe
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) Glyph for U+0331 Combining Macron Below
NFKC Quick Check (NFKC_QC) Maybe
NFKC_SCF (NFKC_SCF) Glyph for U+0331 Combining Macron Below
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) Extend
Soft Dotted (SD) ✘
Sentence Terminal (STerm) ✘
Terminal Punctuation (Term) ✘
Unified Ideograph (UIdeo) ✘
Variation Selector (VS) ✘
Word Break (WB) Extend
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+0331 Combining Macron Below
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) ambiguous
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc) —
Joining Group (jg) No_Joining_Group
Joining Type (jt) Transparent
Line Break (lb) Combining Mark
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+0331 Combining Macron Below
Script Extension (scx) Caucasian Albanian Cherokee Gothic Latin Sunu Thai
Vertical Orientation (vo) R