Gamma (disambiguation)

Gamma (Γ or γ) is the third letter of the Greek alphabet.

Gamma may also refer to:

Science and technology

 * Tropical Storm Gamma (2005), that made landfall in Honduras
 * Hurricane Gamma, that made landfall on the Yucatán Peninsula in 2020
 * Gamma correction, a property of images and video displays
 * Γ, the representation of molecular symmetry in inorganic chemistry

Computing

 * Gamma software, a stage in the software release life cycle
 * Elias gamma coding, in computer science, encoding, compression

Mathematics

 * Euler's constant (γ), a mathematical constant
 * Gamma test (statistics) (γ) or Goodman and Kruskal's gamma, a statistical test
 * Gamma distribution (Γ), a probability distribution function
 * Gamma function (Γ), a mathematical function
 * P-adic gamma function (Γ), a mathematical function
 * Feferman–Schütte ordinal Γ0
 * Typing environment (Γ), within a type system

Physics

 * Gamma ray or gamma radiation (γ or $$\gamma$$), an electromagnetic ray
 * Photon (γ), an elementary particle, the quantum of the electromagnetic field
 * Propagation constant (γ), of an electromagnetic wave
 * Heat capacity ratio or adiabatic index (γ), the ratio of the heat capacity at constant pressure to that at constant volume
 * Lorentz factor (γ), in relativity and astronomy
 * Gamma (eclipse) (γ), how central (how close to the middle of the body) an eclipse is
 * Shear strain (γ)
 * Surface tension (γ)
 * Body effect (γ), on threshold voltage in field-effect transistor technology
 * Christoffel symbols (Γ), in general relativity
 * Circulation (physics) (Γ)
 * Reflection coefficient (Γ), of a wave reflected by an impedance discontinuity
 * Decay width (Γ), of a particle in high-energy physics
 * GAMMA, an extensive air shower array in Armenia
 * γ, a non-SI unit of magnetic flux density, 1nT
 * γ, the third-brightest star of a constellation, in Bayer designation
 * Γ, center of the Brillouin zone

Biology and medicine

 * Gamma wave, a type of brain wave
 * Gamma-glutamyltransferase, a transferase present in the cell membranes of many tissues
 * SARS-CoV-2 Gamma variant, one of the variants of SARS-CoV-2, the virus that causes COVID-19
 * gamma-Hydroxybutyric acid, a neurotransmitter and a depressant drug
 * gamma-hexachlorocyclohexane or Lindane, an organochlorine chemical and neurotoxin

Places

 * Gamma, Missouri, a community in the US
 * Gamma Island (Greenland)
 * Gamma Peak, a mountain in the US
 * Gamma 6 rivers in Russia on Far East

Transportation

 * General Motors Gamma platform, a subcompact automobile platform by General Motors
 * Bristol Siddeley Gamma, a family of British rocket engines
 * Hyundai Gamma engine, a family of 1.6 L gasoline inline-4 engines
 * Suzuki RG250 Gamma, a two-stroke motorcycle

Companies and organizations

 * Gamma (store), a Dutch hardware-store chain
 * Gamma Group, developers of FinFisher and associated suites of malware
 * Gamma (agency), a French photo agency
 * Groupe des Architectes Modernes Marocains, an architecture collective in Morocco
 * Gamma (media company), founded in 2023

Arts and entertainment

 * Gamma (band), American rock band
 * Gamma (miniseries), a 1975 Italian television miniseries
 * Gamma (wrestler), a Japanese professional wrestler working for the Dragon Gate promotion
 * Gamma chord, a type of musical chord
 * Gamma (album), a 2024 album by Gesaffelstein

Fictional entities

 * E-102 Gamma, one of the E-Series characters in the Sonic the Hedgehog franchise
 * Gamma Akutabi, a fictional character from the manga Zombiepowder.
 * Γ, the emblem of the character Waluigi in the Mario franchise
 * Gamma Metroids, an evolution of the Metroid species from the game Metroid II: Return of Samus
 * Gamma radiation, responsible for creation of, and the power source to, The Incredible Hulk and derivative characters

Linguistics

 * Latin gamma, an IPA symbol for voiced velar fricative and in the alphabets of African languages
 * Voiced velar fricative (γ), in phonetics

Other uses

 * Gamma (finance) (Γ), a second order derivative of an option pricing formula
 * Gamma, a classification of sensitive compartmented information