U+0251 was added to Unicode in version 1.1 (1993). It belongs to the block IPA Extensions in the Basic Multilingual Plane.

This character is a Lowercase Letter and is mainly used in the Latin script. It is related to its uppercase variant Ɑ and its titlecase variant Ɑ. The character is also known as latin small letter script a (1.0).

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 38 other glyphs. In text U+0251 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Latin alpha (majuscule: Ɑ, minuscule: ɑ) or script a is a letter of the Latin alphabet, based on one lowercase form of a, or on the Greek lowercase alpha (α). Although ⟨ɑ⟩ is normally just an allograph of ⟨a⟩, there are instances in which the two letters must be carefully distinguished:

  • In the International Phonetic Alphabet, ⟨ɑ⟩ represents an open back unrounded vowel, while ⟨a⟩ represents an open front unrounded vowel. It has the shape of a script-a.
  • Also in the General Alphabet of Cameroon Languages, ⟨Ɑ ɑ⟩ usually represents an open back unrounded vowel, while ⟨A a⟩ represents an open front unrounded vowel. The former is used in the orthographies of several languages of Cameroon, including:
    • Fe'fe'
    • Mbembe
    • Mbo (?): but not Akoose, though it does have phonemes /aa/ and /ɑɑ/; nor Bakaka.
    • in some languages, the script-a form (also called literacy form) of the letter ⟨A a⟩, with the lowercase much like the IPA ⟨ɑ⟩, is used and should not be confused with the Latin alpha ⟨Ɑ ɑ⟩ of the GACL; for example, in Muyang, the literacy ⟨A a⟩ represents an open-mid central unrounded vowel but it is not ⟨Ɑ ɑ⟩; the Latin alpha is not used.

In Cameroon languages, ⟨Ɑ ɑ⟩ must look like the classical lowercase Greek alpha to better differentiate it from the letter a in script form.


System Representation
UTF-8 C9 91
UTF-16 02 51
UTF-32 00 00 02 51
URL-Quoted %C9%91
HTML-Escape ɑ
Wrong windows-1252 Mojibake ɑ
alias latin small letter script a (1.0)

Related Characters

  • ᵅ
  • Ɑ


  • a
  • ⍺
  • a
  • æ
  • ɑ
  • α
  • а
  • ӕ
  • ℀
  • ℁
  • ⍶
  • ⍺
  • ⒜
  • ꜳ
  • ꜵ
  • ꜷ
  • ꜹ
  • ꜻ
  • ꜽ
  • a
  • 𝐚
  • 𝑎
  • 𝒂
  • 𝒶
  • 𝓪
  • 𝔞
  • 𝕒
  • 𝖆
  • 𝖺
  • 𝗮
  • 𝘢
  • 𝙖
  • 𝚊
  • 𝛂
  • 𝛼
  • 𝜶
  • 𝝰
  • 𝞪


Complete Record

Property Value
Age (age) 1.1
Block (blk) IPA_Ext
General Category (gc) Lowercase Letter
Script (sc) Latin
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) None
Decomposition Mapping (dm) ɑ
Lowercase (Lower)
Simple Lowercase Mapping (slc) ɑ
Lowercase Mapping (lc) ɑ
Uppercase (Upper)
Simple Uppercase Mapping (suc) Ɑ
Uppercase Mapping (uc) Ɑ
Simple Titlecase Mapping (stc) Ɑ
Titlecase Mapping (tc) Ɑ
Case Folding (cf) ɑ
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) ɑ
Bidi Paired Bracket Type (bpt) None
Cased (Cased)
Composition Exclusion (CE)
Case Ignorable (CI)
Full Composition Exclusion (Comp_Ex)
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)
Dash (Dash)
Deprecated (Dep)
Default Ignorable Code Point (DI)
Diacritic (Dia)
East Asian Width (ea) Ambiguous
Extender (Ext)
FC NFKC Closure (FC_NFKC) ɑ
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Hex Digit (Hex)
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen)
ID Continue (IDC)
Ideographic (Ideo)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Join Control (Join_C)
Jamo Short Name (JSN)
Joining Type (jt) Non Joining
Line Break (lb) Alphabetic
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) ɑ
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) None
Numeric Value (nv) NaN
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)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Radical (Radical)
Sentence Break (SB) Lower
Simple Case Folding (scf) ɑ
Script Extension (scx) Latin
Soft Dotted (SD)
STerm (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) ALetter
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)