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Delta (letter) Delta ( ; uppercase Δ, lowercase δ; , ''délta'', ) is the fourth letter of the Greek alphabet. In the system of Greek numerals, it has a value of four. It was derived from the Phoenician alphabet, Phoenician letter Dalet (letter), dalet 𐤃. ...
(Δ or δ), the fourth letter of the Greek alphabet * D (NATO phonetic alphabet: "Delta"), the fourth letter in the Latin alphabet *
River delta A river delta is a landform, archetypically triangular, created by the deposition of the sediments that are carried by the waters of a river, where the river merges with a body of slow-moving water or with a body of stagnant water. The creat ...
, at a river mouth *
Delta Air Lines Delta Air Lines, Inc. is a Major airlines of the United States, major airline in the United States headquartered in Atlanta, Georgia (U.S. state), Georgia, operating nine hubs, with Hartsfield–Jackson Atlanta International Airport being its ...
, a major US carrier Delta may also refer to:


Places


Canada

*
Delta, British Columbia Delta is a city in the Lower Mainland region of British Columbia, Canada, and part of Greater Vancouver. Located on the Fraser Lowland south of Fraser River's south distributary, arm, it is bordered by the city of Richmond, British Columbia, R ...
** Delta (federal electoral district), a federal electoral district **
Delta (provincial electoral district) Delta was the name of a provincial electoral district in the Canadian province of British Columbia based on the municipality of Delta, British Columbia, Delta at the mouth of the Fraser River between the city of Vancouver and the US border. It mad ...
*
Delta, Ontario Delta, Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 C ...


United States

*
Mississippi Delta The Mississippi Delta, also known as the Yazoo–Mississippi Delta, or simply the Delta, is the distinctive northwest section of the U.S. state of Mississippi (and portions of Arkansas and Louisiana) that lies between the Mississippi and Yazo ...
*
Arkansas Delta The Arkansas Delta is one of the six natural regions of the state of Arkansas. Willard B. Gatewood Jr., author of ''The Arkansas Delta: Land of Paradox'', says that rich cotton lands of the Arkansas Delta make that area "The Deepest of the Deep ...
* Delta, Alabama *
Delta Junction, Alaska Delta Junction (; ) is a List of cities in Alaska, city in Southeast Fairbanks Census Area, Alaska, United States. As of the 2020 United States census, 2020 census, its population was 918. The city is located a short distance south of the con ...
*
Delta, Colorado Delta is a home rule municipality that is the county seat and the most populous municipality of Delta County, Colorado, United States. The town population was 9,035 at the 2020 United States census. The United States Forest Service headqua ...
* Delta, Illinois * Delta, Iowa * Delta, Kentucky *
Delta, Louisiana Delta is a village in Madison Parish, Louisiana, United States. The population was 232 at the 2020 census. It is part of the Tallulah Micropolitan Statistical Area. As the birthplace of African-American entrepreneur Madam C. J. Walker, the ...
* Delta, Missouri *
Delta, North Carolina Delta is an unincorporated community in Stokes County, North Carolina North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the ...
* Delta, Ohio * Delta, Pennsylvania *
Sacramento–San Joaquin River Delta The Sacramento–San Joaquin River Delta, or California Delta, is an expansive inland river delta and estuary in Central California and Northern California Northern California (commonly shortened to NorCal) is a geocultural region that ...
, California *
Delta, Utah Delta is the largest city in Millard County, Utah, Millard County, Utah, United States. It is located in the northeastern area of Millard County along the Sevier River and is surrounded by farmland. The population was 3,622 at the 2020 United St ...
*
Delta, Wisconsin Delta is a town in Bayfield County, Wisconsin, United States. The population was 315 at the 2020 census, up from 273 at the 2010 census. The unincorporated communities of Delta and Pike River are located in the town. The unincorporated communi ...
, a town and an unincorporated community *
Delta County (disambiguation) Delta County is the name of several counties in the United States: * Delta County, Colorado * Delta County, Michigan * Delta County, Texas See also * Delta (disambiguation) {{Geodis, uscounty ...


Elsewhere

*
Delta Island Delta Island is an island long, lying close southeast of Lambda Island and east of Alpha Island in the Melchior Islands, Palmer Archipelago. The name, derived from the fourth letter of the Greek alphabet, was probably given by Discovery Inv ...
, Antarctica *
Delta Stream Taylor Valley is an ice-free valley about long, once occupied by the receding Taylor Glacier. It lies north of the Kukri Hills between the Taylor Glacier and New Harbour (Antarctica), New Harbour in Victoria Land, Antarctica. Taylor Valley is th ...
, Antarctica *
Delta, Minas Gerais Delta is a Brazilian municipality located in the west of the state of Minas Gerais. Its population was estimated to be 10,768 people living in a total area of . The city belongs to the mesoregion of Triângulo Mineiro and Alto Paranaíba and to ...
, Brazil *
Nile Delta The Nile Delta (, or simply , ) is the River delta, delta formed in Lower Egypt where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's larger deltas—from Alexandria in the west to Port Said in the eas ...
, Egypt *
Delta, Thessaloniki Delta () is a municipality in the Thessaloniki regional unit, Central Macedonia, Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land border ...
, Greece *
Delta State Delta is a States of Nigeria, state in the South South (Nigeria), South-South geopolitical zone of Nigeria. Named after the Niger Delta—a large part of which is in the state—the state was formed from the former Bendel State, on 27 August 1 ...
, Nigeria *
Delta, Astrakhan Oblast Delta () is a rural locality (a settlement) in Buzansky Selsoviet, Krasnoyarsky District, Astrakhan Oblast, Russia. The population was 72 as of 2010. There are 2 streets. Geography Delta is located 42 km northwest of Krasny Yar (the distric ...
, Russia * Colonia Delta, Uruguay


Arts and entertainment


Fictional elements

* Delta Megazord, a Megazord in '' Power Rangers in Space'' * Deltas, a working class in Aldous Huxley's ''
Brave New World ''Brave New World'' is a dystopian novel by English author Aldous Huxley, written in 1931, and published in 1932. Largely set in a futuristic World State, whose citizens are environmentally engineered into an intelligence-based social hier ...
''


Film and television

* ''Delta'' (2008 film), Hungary * ''Delta'' (American TV series), 1992 * ''Delta'' (Australian TV series), 1969 * '' Macross Delta'' or ''Macross Δ'', in the ''Macross'' anime series


Music

*
Alt-J Alt-J (stylised as alt-J, real name Δ) are an English indie rock band formed in 2007 in Leeds. Their lineup includes Joe Newman (guitar/lead vocals), Thom Sonny Green (drums), Gus Unger-Hamilton (keyboards/vocals), and formerly Gwil Sainsbury ...
(∆), a British indie band *
Delta blues Delta blues is one of the earliest-known styles of blues. It originated in the Mississippi Delta and is regarded as a regional variant of country blues. Guitar and harmonica are its dominant instruments; slide guitar is a hallmark of the s ...
, a music style * "Delta", a song by Crosby, Stills & Nash from '' Daylight Again'', 1982


Albums

* ''Delta'' (video album), 2003, Delta Goodrem * ''Delta'' (Delta Goodrem album), 2007 * ''Delta'' (Visions of Atlantis album), 2011 * ''Delta'' (Mumford & Sons album), 2018 * ''Delta'', by
Shapeshifter In mythology, folklore and speculative fiction, shapeshifting is the ability to physically transform oneself through unnatural means. The idea of shapeshifting is found in the oldest forms of totemism and shamanism, as well as the oldest exist ...
, 2013


Other media

* '' Metal Gear Solid Delta'', a video game *Subject Delta, the main protagonist of
Bioshock 2 ''BioShock 2'' is a first-person shooter video game developed by 2K Marin and published by 2K Games. It was released worldwide for PlayStation 3, Microsoft Windows, Windows, and Xbox 360 on February 9, 2010; Feral Interactive released an OS X v ...
* ''Delta'' (poetry magazine) * ''Delta'' (science magazine) * ''Delta'' (video game), 1987 * Delta FM or Delta Radio, a former UK radio station


Businesses and organizations


Companies

*
Delta Air Lines Delta Air Lines, Inc. is a Major airlines of the United States, major airline in the United States headquartered in Atlanta, Georgia (U.S. state), Georgia, operating nine hubs, with Hartsfield–Jackson Atlanta International Airport being its ...
, US **
Delta Connection Delta Connection is a brand name under which Delta Air Lines has air service agreements with domestic regional air carriers that feed traffic to their network by serving passengers primarily in small and medium-sized cities in the domestic mark ...
, a Delta Air Lines brand * Delta Bank, Ukraine * Delta Cafés, a Portuguese coffee company * Delta Electric Company * Delta Electricity, Australia * Delta Electronics, Taiwan * Delta Faucet Company * Delta Holding, a Serbian corporation * Delta Hotels, Canada * Delta Machinery, a tool company * Delta Motor Corporation, South Africa * Delta Computer, a defunct computer company * Delta Motors Corporation, a former automobile company in the Philippines * Delta (company), a Dutch cable operator


Schools

* Delta State (disambiguation), several universities * Delta College (disambiguation) * Delta Academy (disambiguation) * Delta Secondary School (disambiguation) * Delta High School (disambiguation) * Delta School District (disambiguation) * Delta Career Education Corporation, US * Delta International University of New Orleans, Louisiana, US * Delta Schools, Riyadh, Saudi Arabia


Law enforcement and military

* Delta (Norwegian police unit) *
Delta Force The 1st Special Forces Operational Detachment–Delta (1st SFOD-D), also known as Delta Force, Combat Applications Group (CAG), or within Joint Special Operations Command (JSOC) as Task Force Green, is a Special operation forces, special operat ...
, U.S. Army special operations * Space Force Delta, US Space Force logo * Space Delta, a command echelon in the structure of the United States Space Force


Other organizations

*
Delta Sigma Theta Delta Sigma Theta Sorority, Inc. () is a List of African-American fraternities, historically African American Fraternities and sororities, sorority. The organization was founded by college-educated women dedicated to public service with an emp ...
, a historically Black college sorority often referred to simply as "Delta". *
STC Delta , type = State-owned enterprise , industry = Defense , founded = , founder = , hq_location_city = Tbilisi , hq_location_country = Georgia , area_served = Worldwide , key_people ...
, a Georgian R&D center *
American Delta Party Rocky De La Fuente ran a third-party campaign for the presidency of the United States in the 2016 United States presidential election, 2016 election. De La Fuente had sought the Democratic Party (United States), Democratic Party's nomination duri ...
, an American political party *
San Francisco Deltas The San Francisco Deltas were an American professional soccer team based in San Francisco, California, United States. Founded in 2016, the team made its debut in the North American Soccer League in 2017. The franchise played its home games at ...
, a soccer team


Finance

*
Delta (finance) In mathematical finance, the Greeks are the quantities (known in calculus as partial derivatives; first-order or higher) representing the sensitivity of the price of a derivative instrument such as an option to changes in one or more underlying p ...
, rate of change of a value * Visa Delta or Visa Debit, a debit card


People

* Δ, signature of David Macbeth Moir (1798–1851), Scottish physician and writer *
Delta Burke Delta Burke McRaney (born July 30, 1956) is an American actress, producer and author. From 1986 to 1991, she starred as Suzanne Sugarbaker in the CBS sitcom '' Designing Women'', for which she received two Emmy Award nominations for Outstand ...
(born 1956), American actress * Delta Dorsch (1915–2011), U.S. Virgin Islands public servant *
Delta Goodrem Delta Lea Goodrem Order of Australia, AM (born 9 November 1984) is an Australian singer, songwriter, television personality and actress based in Sydney. Goodrem signed a recording contract with Sony Music at the age of 15. Her debut studio album ...
(born 1984), Australian singer *
Delta Work Delta Work is the stage name of Gabriel A. Villarreal, an Emmy Award-winning American drag performer and stylist, best known for competing on the third season (2011) of the reality competition television series ''RuPaul's Drag Race''. Work r ...
(Gabriel A. Villarreal), American drag performer * Penelope Delta (1874–1941), Greek author *
Delta (wrestler) Delta (born August 27, 1985) is a Mexican ''Lucha libre, Luchador'' ''wrestling mask, enmascarado'', or masked professional wrestling, professional wrestler currently working for the Mexico City based professional wrestling promotion Consejo Mund ...
(born 1985), Mexican professional wrestler


Science and technology


Chemistry

* Δ (delta), right-handed isomer in a
coordination complex A coordination complex is a chemical compound consisting of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of chemical bond, bound molecules or ions, that are in turn known as ' ...
* Delta convention, for designating allenes * Δ, notation for double bond positions in
fatty acids In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, ...


Computing

* Delta (computer), a Russian ZX Spectrum clone *
Delta encoding Delta encoding is a way of storing or transmitting data in the form of '' differences'' (deltas) between sequential data rather than complete files; more generally this is known as data differencing. Delta encoding is sometimes called delta comp ...
or delta compression, in computer communications *
Delta timing Delta time or delta timing is a concept used amongst programmers in relation to hardware and network responsiveness. In graphics programming, the term is usually used for variably updating scenery based on the elapsed time since the program las ...
, in relation to hardware and network responsiveness * Delta (emulator), a video game console emulator * DELTA, an
OpenVMS OpenVMS, often referred to as just VMS, is a multi-user, multiprocessing and virtual memory-based operating system. It is designed to support time-sharing, batch processing, transaction processing and workstation applications. Customers using Op ...
debugger


Earth sciences

* Epicentral distance (Δ) * Subtropical Storm Delta (1972), Atlantic * Tropical Storm Delta (2005), Atlantic * Hurricane Delta, (2020) Atlantic


Mathematics

* Δ, a difference of state between two before and after state schemas in the
Z notation The Z notation is a formal specification language used for describing and modelling computing systems. It is targeted at the clear specification of computer programs and computer-based systems in general. History In 1974, Jean-Raymond Abria ...
* \delta, the first Feigenbaum constant * Delta connective, a unary connective in
t-norm fuzzy logics T-norm fuzzy logics are a family of non-classical logics, informally delimited by having a semantics that takes the real number, real unit interval , 1for the system of truth values and functions called t-norms for permissible interpretatio ...
*
Delta method In statistics, the delta method is a method of deriving the asymptotic distribution of a random variable. It is applicable when the random variable being considered can be defined as a differentiable function of a random variable which is Asymptoti ...
for approximating the distribution of a function *
Difference operator In mathematics, a recurrence relation is an equation according to which the nth term of a sequence of numbers is equal to some combination of the previous terms. Often, only k previous terms of the sequence appear in the equation, for a parameter ...
(Δ) *
Dirac delta function In mathematical analysis, the Dirac delta function (or distribution), also known as the unit impulse, is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line ...
( function) *
Kronecker delta In mathematics, the Kronecker delta (named after Leopold Kronecker) is a function of two variables, usually just non-negative integers. The function is 1 if the variables are equal, and 0 otherwise: \delta_ = \begin 0 &\text i \neq j, \\ 1 &\ ...
(\delta_) *
Laplace operator In mathematics, the Laplace operator or Laplacian is a differential operator given by the divergence of the gradient of a Scalar field, scalar function on Euclidean space. It is usually denoted by the symbols \nabla\cdot\nabla, \nabla^2 (where \ ...
(Δ) *
Modular discriminant In mathematics, the Weierstrass elliptic functions are elliptic functions that take a particularly simple form. They are named for Karl Weierstrass. This class of functions is also referred to as ℘-functions and they are usually denoted by the s ...
(Δ) * Symmetric difference (Δ) * Non-inferiority margin (δ) * Δ, a class of sets in the analytical hierarchy, for every natural number ''m'', ''n''


Medicine and biology

* Delta (ligand), an activator of the notch signaling pathway * DELTA (taxonomy), a data format for descriptions of living things * Delta (wasp), ''Delta'' (wasp), Old World genus of potter wasps * Delta (moth), ''Delta'' (moth) (''Campydelta''), a genus * Delta variant, of SARS-CoV-2 that causes COVID-19 * Delta wave, a brain wave


Vehicles

* Delta (rocket family) * Delta, a tricycle layout * Daihatsu Delta, trucks * Delta formation, V-shaped aircraft formation * Delta wing, a triangular aircraft wing * Delta-class submarine, ''Delta''-class submarine (NATO reporting name), Soviet/Russian SSBN * General Motors Delta platform, a car platform * Lancia Delta, an Italian rally car * Oldsmobile Delta 88, a GM 1965–1983 * TrikeBuggy Delta, an American ultralight trike


Other science and technology

* Refractory delta, in the roof of an electric arc furnace * Delta baryon, a subatomic particle * Delta circuit, in three-phase electric power#Delta (Δ), three-phase electric power * Delta robot, a delta-shaped parallel robot * Ilford Delta, a photographic film * Depleted Lean-channel Transistor, the first type of fin field-effect transistor


Sport

* Delta (horse) (1946–1960), Australia * Mississippi Valley State Delta Devils and Devilettes, sports teams, Itta Bena, Mississippi, US *
San Francisco Deltas The San Francisco Deltas were an American professional soccer team based in San Francisco, California, United States. Founded in 2016, the team made its debut in the North American Soccer League in 2017. The franchise played its home games at ...
, a soccer team * Delta (orienteering club), a Finnish former club


Other uses

* Delta Dental, an American system * Delta Works, a flood-protection works in the Netherlands * Delta, a font designed by Aldo Novarese * Diploma in Teaching English to Speakers of Other Languages * Delta, a quadra group used in socionics#Quadras, socionics


See also

* The Delta (disambiguation) * Delta model, a strategic management model * Nabla symbol (\nabla), an inverted delta representing del, a vector differential operator *
Kronecker delta In mathematics, the Kronecker delta (named after Leopold Kronecker) is a function of two variables, usually just non-negative integers. The function is 1 if the variables are equal, and 0 otherwise: \delta_ = \begin 0 &\text i \neq j, \\ 1 &\ ...
( \delta_), a function * Dirac delta ( \delta(x)), a function * \Delta ABC, a triangle defined by points A, B and C * (ε, δ)-definition of limit * Δ%, \Delta \% (%CH), a percentage change operation found on some calculators * \Delta^0_n, a classification in the arithmetical hierarchy * \Delta^1_n, a classification in the analytical hierarchy * \Delta^P_i, a classification in the polynomial hierarchy * Δ13C, ''δ''13C, a measure of the ratio of stable isotopes 13C:12C * Δ15N, ''δ''15N, a measure of the ratio of stable isotopes 15N:14N * Δ18O, ''δ''18O, a measure of the ratio of stable isotopes oxygen-18:oxygen-16 * DeltaWing, a prototype racing car * High-leg delta, a three phase electrical circuit * Delta Delta Delta, a sorority * Delta function (disambiguation) * Task Force Delta (disambiguation) * Delta Force (disambiguation) * Delta class (disambiguation) * Delta 1 (disambiguation) * Delta 4 (disambiguation) * * * and δ * and δ {{disambiguation, geo, given name