Beta (disambiguation)

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Beta (B, β) is the second letter of the Greek alphabet.

Beta or BETA

may also refer to:


Computing and technology[edit]


Mathematics, finance, and statistics[edit]

  • Beta (finance), the β coefficient in the capital asset pricing model (CAPM) that measures the sensitivity of the expected return of a stock (or portfolio) to the market
  • β, a symbol representing the probability of a type II error in statistics
  • β-reduction, a reduction rule for lambda calculus
  • Beta distribution, in statistics—a family of continuous probability distributions
  • Euler's Beta function, a special function also known as the Euler integral of the first kind
  • Dirichlet beta function
  • Beta (Βῆτα), a nickname given to Greek mathematician Eratosthenes by his contemporaries
  • Beta coefficient (also known as standardized coefficient), in statistics—the estimate of an analysis performed on variables that have been standardized so that they have variances of 1
  • Beta invariant of a matroid

Media and entertainment[edit]

Fictional characters and communities[edit]

  • BETA (Muv-Luv), an acronym for "Beings of the Extra Terrestrial origin which is Adversary of human race", an alien race from the video game series Muv-Luv
  • Beta (Transformers), a female Transformer from Transformers: Generation 1
  • BETA, an organization in the 1986 TV series The Adventures of the Galaxy Rangers
  • Beta Quadrant, one of four quadrants in the galaxy in Star Trek
  • Beta Hirogen, the second in command of a Hirogen hunting party, as seen in Star Trek: Voyager
  • Coral the Betta, a character in the Sonic the Hedgehog Archie Comics


  • Beta (film), a 1992 Bollywood film directed by Indra Kumar


  • Beta (Magic: The Gathering), the second (revised) part of the first set of the card game Magic: The Gathering
  • β, a classification of strength in the Earthbound, or Mother, series of Nintendo role-playing games

Music and broadcasting[edit]

News media[edit]

Social networking[edit]

  • B3ta, a British humour webcommunity



  • Beta, a rank in a community of social animals
  • Beta-endorphin, a kind of neurotransmitter
  • Beta carbon, in organic chemistry—the second carbon atom in a chain when counting from a functional group
  • Beta cell, a type of cell in the pancreas, which produces insulin
  • Beta sheet, a secondary protein structure


  • Beta (plant), a genus of flowering plants, mostly referred to as beets
  • Beta (grape), a variety of North American grape


  • Beta, the common-emitter current gain of a bipolar junction transistor




  • Beta (plasma physics), the ratio of thermal to magnetic pressure in plasma
  • Beta (velocity), the speed of an object relative to the speed of light
  • Beta function (physics), also β(g)—a function in quantum field theory
  • Beta particle, a name used to refer to high-energy electrons (β) or positrons (β+) emitted by certain types of radioactive nuclei
  • β, a symbol for compressibility, a measure of the relative volume change of a fluid or solid as a response to a pressure change
  • Thermodynamic beta, in thermodynamics and statistical mechanics—a numerical quantity related to the thermodynamic temperature of a system
  • β, a symbol for Phase Constant, in electromagnetics and electrical engineering, used in the theory of plane waves



  • Beta (climbing), climbing jargon that designates information about a climb
  • Beta Ethniki, the second tier division of the Greek football (soccer) league

Other uses[edit]

See also[edit]

  • Betta, a genus of fish, often misspelled “beta”
  • ß, a German letter that resembles β
  • Alpha