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 ${\displaystyle \gamma }$), 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

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
• Lancia Gamma, an executive coupe by Fiat subsidiary Lancia

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 robots in the Sonic the Hedgehog franchise
• Gamma Akutabi, a fictional character from the manga Zombiepowder.
• Gamma (ガンマ), an elf girl and the third member of Shadow Garden in the light novel and anime series The Eminence in Shadow
• 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 (ɣ), 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

See also

• Gamma matrices, in mathematical physics
• The Gamma People, a 1956 British-American film
• Gama (disambiguation)
• Gamma ray (disambiguation)
• Grama (disambiguation)
• Gam (disambiguation)
• Gram (disambiguation)