B

Look up B in Wiktionary, the free dictionary.

B is the second letter of the Latin alphabet.

B may also refer to:

Ethnic Slang

• B is short for Blood or perhaps Brother, interchangable with Black or African ethicity denoting similar ancestory. Commonly used by other races as a term of friendship, solidarity or ethnic sameness. Considered as originating among African Americans usage among other races is considered as benignly strange, slightly funny or edgy, and teasing can occur. See Psych TV show, episode "High Top Fade" for slightly better understanding.

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

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)
• bel (B), a unit of power level

Music, education and religion

• B (musical note)
• B (I Am Kloot album), a compilation album by Manchester band I Am Kloot
• B, grade (education) 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.
• ♭ Flat (music), a note lower in pitch by a semitone

Computing and internet

• B (programming language)
• B-Method, for computer software development
• b, bit
• B, byte
• /b/, the name of the "random" board on many imageboard websites, most notable 4chan

Publishing

• b (newspaper), a free daily, tabloid sized newspaper, published by the The Baltimore Sun

Sport

• B, Blood type
• Backline, 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 (S-train)

See also

• Decibel, one tenth of a bel (B)

This disambiguation page lists articles associated with the same Latin letter. If an internal link led you here, you may wish to change the link to point directly to the intended article.