The English Wiktionary has dictionary definitions (meanings of a word) for: alfa and alpha

Alpha may mean:

Alpha, a letter in the Greek alphabet. α may be used as the symbol for:

• Angle of attack in aerodynamics
• Common-base current gain of a transistor in electronics
• In physics:
  • Fine-structure constant, a fundamental physical constant
  • Alpha particle, form of particle radiation
  • H-alpha, or H-α, an emission line created by hydrogen atoms
• The alpha carbon in organic chemistry
• In Bayer designation, the typically brightest star in a constellation
• The significance level in statistical hypothesis testing
• Alpha channel, describing transparency and opacity in computer graphics
• The alpha coefficient in evaluating financial returns
• Thermal diffusivity

• Alpha, Michigan
• Alpha, Minnesota
• Alpha, New Jersey
• Alpha, Queensland

• Alpha (band), a British electronic music group
• Alpha Magazine, Australian men's sport magazine
• Alpha (search engine), a search engine by Yahoo!
• Alpha TV, a Greek terrestrial channel
• Alpha the Ultimate Mutant, a character featured in Marvel Comics

• The Bayer designation of the brightest star in a constellation, for example
  • Alpha Centauri, the brightest star system in the southern constellation of Centaurus
• Alpha (biology), "alpha male" and "alpha female", the highest ranking individuals in a community of social animals
• Alpha (investment), a measurement of risk-adjusted performance
• Alpha waves, recorded by electroencephalography
• Cronbach's alpha, a statistical measure of reliability
• ALPHA, the Antihydrogen Laser PHysics Apparatus, an experiment at CERN.

• Alpha (machine learning), the degree to which a learning agent takes into account new information
• ALPHA refers to the set of ASCII characters A-Z and a-z, as defined in RFC 4234
• The ALPHA programming language
• Alpha, a development stage of software release
• DEC Alpha, a microprocessor/central processing unit (CPU)
• AlphaServer - DEC now HP machine successor to the VAX
• AlphaStation - DEC now HP workstation successor to the VAX

• Latin alpha, an open back unrounded vowel
• Space Station Alpha, the original name and unofficial call sign for the International Space Station
• The first letter in the NATO phonetic alphabet
• Alpha (radio navigation), a Russian radio navigation system similar to the former Omega Navigation System
• Alpha 2000, a light aircraft built in New Zealand
• Alpha Group, a dedicated counter-terrorism unit that belonged to OSNAZ
• Alpha class submarine, a Russian fast attack nuclear submarine
• Sony α or Sony Alpha, a digital SLR series by Sony
  • Minolta α or Minolta Alpha, the Japanese name for a series of SLR cameras known as Maxxum or Dynax elsewhere, and predecessor to Sony's brand of the same name
• Tropical Storm Alpha (2005)
• Alpha Industries, clothing company

• Beta

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