B (disambiguation)

B is the second letter of the Latin alphabet.

B may also refer to:

Science and technology

B battery, a battery used to provide the plate voltage of a vacuum tube
Haplogroup B (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
Haplogroup B (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
B, Blood type
ATC code B Blood and blood forming organs, a section of the Anatomical Therapeutic Chemical Classification System
Boron, a chemical element
B, B+ and B-, expressions of buoyancy in convective available potential energy
Bulb (photography), a shutter-speed setting
B horizon, a layer of soil commonly known as subsoil
Vitamin B
Dominical letter B for a common year starting on Saturday
Hepatitis B

Astronomy

B, abbreviation for astronomical objects in the Barnard list of dark nebulae
b represents latitude in the galactic coordinate system

Symbols for physical and chemical quantities and units

one of the reciprocal lattice vectors (b*)
breadth (b), see length
impact parameter (b)
molality (b)
barn (unit) (b), a unit of area
magnetic field (B)
napierian absorbance (B)
rotational constant (B)
second virial coefficient (B)
susceptance (B)
boolean domain ( $\mathbb {B}$ ), mathematics

Music

Beyoncé, also known by the name B
B (musical note)
B major, a scale
B minor, a scale
B major chord, Chord names and symbols (popular music)
B (I Am Kloot album), a compilation album by I Am Kloot
B (Battles EP), an extended play by Battles
b (Moxy Früvous EP), an extended play by Moxy Früvous
♭ Flat (music), a note lower in pitch by a semitone
"b", an Iamamiwhoami song
"B", a song by Todrick Hall from his 2018 album Forbidden
Charly B (born 1981), the stage name of reggae singer-songwriter Charles Blanvillain
B, member of Superorganism (band)

Computing and internet

B (programming language)
/b/, a board on 4chan
B-Method, for computer software development
B-tree, a data structure
Bit (b)
Byte (B)
<b></b>, an HTML element denoting bold text

Linguistics

b, the symbol used in the International Phonetic Alphabet for the voiced bilabial stop
В, a letter of the Cyrillic alphabet

Media

b (newspaper), a free daily, tabloid sized newspaper, published by The Baltimore Sun
Rajawali Televisi, previously name B Channel, Television in Indonesia
B, the production code for the 1963–64 Doctor Who serial The Daleks
"B" Is for Burglar, the second novel in Sue Grafton's "Alphabet mystery" series, published in 1985

Sport

Australian rules football positions#Full back, in Australian Rules football
B, often used after the name of football clubs to denote a reserve team

Transportation

B (New York City Subway service)
B (Los Angeles Metro)
Line B (Buenos Aires Metro)
B (S-train), in Copenhagen
RER B, a line in the RER of Paris
B, abbreviation for Bundesstraße (federal highway) in Austria and Germany
Bayshore Route of Shuto Expressway in Japan, numbered as route B

Other uses

Belgium, on the vehicle registration plates of the European Union
B (grade), for evaluation of students' work
Codex Vaticanus Graecus 1209, an ancient bible
Barnabites (Latin: Clerici Regulares Sancti Pauli), a religious order abbreviated to the postnominal B.
B (bank), a banking brand in the United Kingdom
Bucharest, on the vehicle registration plates of Romania
Bravo, the military time zone code for UTC+02:00

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