Home: go to the homepage U+1F100 to U+1F1FF Enclosed Alphanumeric Supplement
Glyph for U+1F18E
Source: Noto Emoji

U+1F18E Negative Squared Ab

U+1F18E was added to Unicode in version 6.0 (2010). It belongs to the block U+1F100 to U+1F1FF Enclosed Alphanumeric Supplement in the U+10000 to U+1FFFF Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as blood type AB.

The glyph is not a composition. It has a Wide East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+1F18E behaves as Ambiguous (Alphabetic or Ideographic) regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The CLDR project labels this character β€œAB button (blood type)” for use in screen reading software. It assigns additional tags, e.g. for search in emoji pickers: AB, blood type.

This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Glyph for U+FE0E Variation Selector-15: πŸ†ŽοΈŽ See the Emojipedia for more details on this character’s emoji properties.

The Wikipedia has the following information about this codepoint:

The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes. For human blood transfusions, it is the most important of the 44 different blood type (or group) classification systems currently recognized by the International Society of Blood Transfusions (ISBT) as of December 2022. A mismatch (very rare in modern medicine) in this, or any other serotype, can cause a potentially fatal adverse reaction after a transfusion, or an unwanted immune response to an organ transplant. The associated anti-A and anti-B antibodies are usually IgM antibodies, produced in the first years of life by sensitization to environmental substances such as food, bacteria, and viruses.

The ABO blood types were discovered by Karl Landsteiner in 1901; he received the Nobel Prize in Physiology or Medicine in 1930 for this discovery. ABO blood types are also present in other primates such as apes and Old World monkeys.

Representations

System Representation
NΒΊ 127374
UTF-8 F0 9F 86 8E
UTF-16 D8 3C DD 8E
UTF-32 00 01 F1 8E
URL-Quoted %F0%9F%86%8E
HTML hex reference 🆎
Wrong windows-1252 Mojibake 🆎
alias blood type AB

Elsewhere

Complete Record

Property Value
Age 6.0 (2010)
Unicode Name NEGATIVE SQUARED AB
Unicode 1 Name β€”
Block Enclosed Alphanumeric Supplement
General Category Other Symbol
Script Common
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+1F18E Negative Squared Ab
Lowercase ✘
Simple Lowercase Mapping Glyph for U+1F18E Negative Squared Ab
Lowercase Mapping Glyph for U+1F18E Negative Squared Ab
Uppercase ✘
Simple Uppercase Mapping Glyph for U+1F18E Negative Squared Ab
Uppercase Mapping Glyph for U+1F18E Negative Squared Ab
Simple Titlecase Mapping Glyph for U+1F18E Negative Squared Ab
Titlecase Mapping Glyph for U+1F18E Negative Squared Ab
Case Folding Glyph for U+1F18E Negative Squared Ab
ASCII Hex Digit ✘
Alphabetic ✘
Bidi Control ✘
Bidi Mirrored ✘
Composition Exclusion ✘
Case Ignorable ✘
Changes When Casefolded ✘
Changes When Casemapped ✘
Changes When NFKC Casefolded ✘
Changes When Lowercased ✘
Changes When Titlecased ✘
Changes When Uppercased ✘
Cased ✘
Full Composition Exclusion ✘
Default Ignorable Code Point ✘
Dash ✘
Deprecated ✘
Diacritic ✘
Emoji Modifier Base ✘
Emoji Component ✘
Emoji Modifier ✘
Emoji Presentation βœ”
Emoji βœ”
Extender ✘
Extended Pictographic βœ”
FC NFKC Closure Glyph for U+1F18E Negative Squared Ab
Grapheme Cluster Break Any
Grapheme Base βœ”
Grapheme Extend ✘
Grapheme Link ✘
Hex Digit ✘
Hyphen ✘
ID Continue ✘
ID Start ✘
IDS Binary Operator ✘
IDS Trinary Operator and ✘
IDSU 0
ID_Compat_Math_Continue 0
ID_Compat_Math_Start 0
Ideographic ✘
InCB None
Indic Mantra Category β€”
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name β€”
Join Control ✘
Logical Order Exception ✘
Math ✘
Noncharacter Code Point ✘
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+1F18E Negative Squared Ab
NFKC Quick Check Yes
NFKC_SCF Glyph for U+1F18E Negative Squared Ab
NFKD Quick Check Yes
Other Alphabetic ✘
Other Default Ignorable Code Point ✘
Other Grapheme Extend ✘
Other ID Continue ✘
Other ID Start ✘
Other Lowercase ✘
Other Math ✘
Other Uppercase ✘
Prepended Concatenation Mark ✘
Pattern Syntax ✘
Pattern White Space ✘
Quotation Mark ✘
Regional Indicator ✘
Radical ✘
Sentence Break Other
Soft Dotted ✘
Sentence Terminal ✘
Terminal Punctuation ✘
Unified Ideograph ✘
Variation Selector ✘
Word Break Other
White Space ✘
XID Continue ✘
XID Start ✘
Expands On NFC ✘
Expands On NFD ✘
Expands On NFKC ✘
Expands On NFKD ✘
Bidi Paired Bracket Glyph for U+1F18E Negative Squared Ab
Bidi Paired Bracket Type None
East Asian Width Wide
Hangul Syllable Type Not Applicable
ISO 10646 Comment β€”
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Ambiguous (Alphabetic or Ideographic)
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+1F18E Negative Squared Ab
Script Extension
Vertical Orientation U