Delta commonly refers to: *

Delta (letter) Delta (; uppercase Δ, lowercase δ or 𝛿; el, δέλτα, ''délta'', ) is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter dalet 𐤃. Letters that com ...

(Δ or δ), a letter of the Greek alphabet *

River delta A river delta is a landform shaped like a triangle, created by deposition of sediment that is carried by a river and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rare ...

, at a river mouth * D (

NATO phonetic alphabet The (International) Radiotelephony Spelling Alphabet, commonly known as the NATO phonetic alphabet, is the most widely used set of clear code words for communicating the letters of the Roman alphabet, technically a ''radiotelephonic spellin ...

: "Delta") *

Delta Air Lines Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. One of the world's oldest airlines in operation, Delta is headquartered in Atlanta, Georgia. The airline, along ...

, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also refer to:

Places

Canada

Delta, British Columbia Delta is a city in the Lower Mainland region of British Columbia, Canada, as part of Greater Vancouver. Located on the Fraser Lowland south of Fraser River's south arm, it is bordered by the city of Richmond on the Lulu Island to the north, N ...

Delta (electoral district) Delta is a federal electoral district in British Columbia, Canada, that was represented in the House of Commons of Canada from 1988 to 1997 and since 2015. History The 1988–1997 edition of this riding was created in 1987 from parts of ...

, 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 at the mouth of the Fraser River between the city of Vancouver and the US border. It made its first appearance on ...

* Delta, Ontario

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 Yaz ...

* Delta, Alabama * Delta Junction, Alaska *

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 headquarte ...

Delta, Illinois Delta is an unincorporated community in Carrier Mills Township, Saline County, Illinois, United States. Delta is located along the Canadian National Railway The Canadian National Railway Company (french: Compagnie des chemins de fer nationa ...

Delta, Iowa Delta is a city in Keokuk County, Iowa, United States. The population was 264 at the 2020 census. Geography Delta is located at (41.324112, -92.329481). According to the United States Census Bureau, the city has a total area of , all of it l ...

Delta, Kentucky Delta is an unincorporated community in Wayne County, Kentucky Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illi ...

Delta, Louisiana Delta is a village in Madison Parish, Louisiana, United States. The population was 239 at the 2000 census. It is part of the Tallulah Micropolitan Statistical Area. As the birthplace of African-American entrepreneur Madam C.J. Walker, the fi ...

Delta, Missouri Delta is a city in Cape Girardeau County, Missouri, United States. The population was 376 at the 2020 census. It is part of the Cape Girardeau– Jackson, MO- IL Metropolitan Statistical Area. Name A post office called Delta was established ...

* Delta, North Carolina *

Delta, Ohio Delta is a village in Fulton County, Ohio, United States. The population was 3,103 at the 2010 census. History The first settlement at Delta was made in the 1830s. A post office called Delta has been in operation since 1837. The village was inco ...

Delta, Pennsylvania Delta is a borough in York County, Pennsylvania, United States, and one of the southernmost communities in Pennsylvania. The population was 706 at the 2020 census. It is served by the South Eastern School District which provides a public educatio ...

Sacramento–San Joaquin River Delta The Sacramento–San Joaquin River Delta, or California Delta, is an expansive inland river delta and estuary in Northern California. The Delta is formed at the western edge of the Central Valley by the confluence of the Sacramento and Sa ...

, California *

Delta, Utah Delta is the largest city in 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 3,436 at the 2010 census. History Delta was o ...

Delta, Wisconsin Delta is a town in Bayfield County, Wisconsin, United States. The population was 273 at the 2010 census. The unincorporated communities of Delta and Pike River are located in the town. The unincorporated community of Sutherland is located parti ...

, a town *

Delta (community), Wisconsin Delta is a census-designated place in the town of Delta, Bayfield County, Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bo ...

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) Delta commonly refers to: * Delta (letter) (Δ or δ), a letter of the G ...

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 Invest ...

, Antarctica *

Delta Stream Delta Stream () is a small meltwater stream flowing from Howard Glacier into Lake Fryxell in Taylor Valley, Victoria Land. It was first studied on the ground by Troy L. Pewe Troy ( el, Τροία and Latin: Troia, Hittite: 𒋫𒊒𒄿𒊭 ...

, 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 t ...

, Brazil *

Nile Delta The Nile Delta ( ar, دلتا النيل, or simply , is the delta formed in Lower Egypt where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's largest river deltas—from Alexandria in the west to ...

, Egypt *

Delta, Thessaloniki Delta ( el, Δέλτα) is a municipality in the Thessaloniki regional unit, Central Macedonia, Greece. The seat of the municipality is the town Sindos. The municipality of Delta covers an area of 311.09 km2. Municipality The municipality ...

, Greece * Delta State, Nigeria * Delta, Astrakhan Oblast, Russia * Colonia Delta, Uruguay

Arts and entertainment

Fictional characters

* Delta Megazord, a zord 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 hiera ...

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 Gwilym Sainsbur ...

(∆), 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 th ...

, 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, 2013

Other media

* ''Delta'' (magazine), a poetry magazine * ''Delta'' (science magazine) * ''Delta'' (video game), 1987 *

Delta FM Delta FM was a United Kingdom local radio station, broadcasting to East Hampshire, South West Surrey and North West Sussex. The station provided local news, community information, and specialist music programming to the towns of Alton, Hampshire ...

or Delta Radio, a former UK radio station

Businesses and organizations

Companies

, US ** Delta Connection, a Delta Air Lines brand * Delta Bank, Ukraine *

Delta Cafés Delta Cafés () is a Portuguese coffee roasting and coffee packaging company headquartered in Campo Maior, Alentejo. The company was founded in 1961 and is among the top market leaders in the Iberian Peninsula. The company belongs to Rui Nabei ...

, a Portuguese coffee company * Delta Electric Company * Delta Electricity, Australia *

Delta Electronics Delta Electronics, Inc. (also known as DELTA or Delta Electronics), is a Taiwanese electronics manufacturing company. Its headquarters are in Neihu, Taipei. It is known for its DC industrial and computer fans and for switching power supplies. T ...

, Taiwan * Delta Faucet Company *

Delta Holding Delta Holding is a Serbian holding company with the headquarters in Belgrade. Delta Holding performs a variety of services, such as agribusiness, real estate and wholesale. It employs around 3,600 people, making it one of the largest non-governmen ...

, a Serbian corporation *

Delta Hotels Delta Hotels by Marriott is a four-star brand of hotels and resorts located primarily in North America. Canadian institution Beginnings In June 1962, William Pattison and his business partners opened the 68-room Delport Inn in Richmond, BC. Tha ...

, Canada * Delta Machinery, a tool company * Delta Motor Corporation, South Africa * Former

Delta Motors Corporation Delta Motor Corporation was an automobile company from the Philippines established by Ricardo C. Silverio, Sr. It operated under a technical tie-up with Toyota Motor Corporation of Japan,Doner, p. 43 but also produced its own range of small off-r ...

, Philippines * DELTA (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

Delta (Norwegian police unit) ''Beredskapstroppen'' ( en, Emergency Unit), callsign "Delta", is the police tactical unit of the Norwegian Police Service. Its members are trained to perform dangerous operations such as high-risk arrests and hostage situations. It is organiza ...

Military

Delta Force The 1st Special Forces Operational Detachment–Delta (1st SFOD-D), referred to variously as Delta Force, Combat Applications Group (CAG), Army Compartmented Elements (ACE), "The Unit", or within Joint Special Operations Command (JSOC), Task Fo ...

, U.S. Army special operations * Space Force Delta, US Space Force logo * Delta, a command echelon in the structure of the United States Space Force

Other organizations

* STC Delta, 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 election. De La Fuente had sought the Democratic Party's nomination during their presidential primaries. De La Fuente did not win any delegates to ...

, an American political party * San Francisco Deltas, a soccer team * Delta Omicron, a music fraternity

Finance

Delta (finance) In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is de ...

, rate of change of a value * Visa Delta or Visa Debit, a debit card

People

* Δ, signature of

David Macbeth Moir David Macbeth Moir (5 January 17986 July 1851) was a Scottish physician and writer. Biography Moir was born at Musselburgh on 5 January 1798, the son of Elizabeth Macbeth (1767–1842) and Robert Moir (''d''. 1842). He was educated at Musse ...

(1798–1851), Scottish physician and writer * Delta Burke (born 1956), American actress *

Delta Goodrem Delta Lea Goodrem AM (born November 9, 1984) is an Australian singer, songwriter, and actress. Goodrem signed to Sony Music at the age of 15. Her debut album, '' Innocent Eyes'' (2003), topped the ARIA Albums Chart for 29 non-consecutive wee ...

(born 1984), Australian singer * Delta Work, drag queen *

Penelope Delta Penelope Delta (; 1874, Alexandria, Khedivate of Egypt – 2 May 1941, Athens, Greece) was a Greek author. She is widely celebrated for her contributions to the field of children's literature. Her historical novels have been widely read and ha ...

(1874–1941), Greek author * Delta (wrestler) (born 1985), Mexican

Science, technology, and mathematics

* The upper- and lower-case Greek letter delta (Δ, δ) are used in many fields to denote a difference in some parameter

Chemistry

* Δ (delta), right-handed isomer in a

coordination complex A coordination complex consists of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of bound molecules or ions, that are in turn known as '' ligands'' or complexing agents. M ...

* Delta convention, for designating allenes * Δ is used to specify certain

fatty acids In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated and unsaturated compounds#Organic chemistry, saturated or unsaturated. Most naturally occurring fatty acids have an B ...

Computing

* Delta (computer), a Russian ZX Spectrum clone * Delta encoding or delta compression, in computer communications * Delta timing, in relation to hardware and network responsiveness * 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 Ope ...

debugger

Earth sciences

* Epicentral distance (Δ) * Subtropical Storm Delta (1972), Atlantic *

Tropical Storm Delta (2005) Tropical Storm Delta was a late-forming tropical storm during the hyperactive 2005 Atlantic hurricane season which struck the Canary Islands as a strong extratropical storm where it caused significant damage. It then crossed over Morocco before ...

, 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 *

Delta method In statistics, the delta method is a result concerning the approximate probability distribution for a function of an asymptotically normal statistical estimator from knowledge of the limiting variance of that estimator. History The delta meth ...

for approximating the distribution of a function * Difference operator (Δ) *

Dirac delta function In mathematics, the Dirac delta distribution ( distribution), also known as the unit impulse, is a generalized function or distribution over the real numbers, whose value is zero everywhere except at zero, and whose integral over the enti ...

( 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 function on Euclidean space. It is usually denoted by the symbols \nabla\cdot\nabla, \nabla^2 (where \nabla is th ...

(Δ) * Modular discriminant (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) The Notch signaling pathway is a highly conserved cell signaling system present in most animals. Mammals possess four different notch receptors, referred to as NOTCH1, NOTCH2, NOTCH3, and NOTCH4. The notch receptor is a single-pass transmembra ...

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

Vehicles

* Delta (rocket family) * Delta, a

tricycle A tricycle, sometimes abbreviated to trike, is a human-powered (or gasoline or electric motor powered or assisted, or gravity powered) three-wheeled vehicle. Some tricycles, such as cycle rickshaws (for passenger transport) and freight trikes ...

layout *

Daihatsu Delta The Daihatsu Delta is an automotive nameplate that has been used on a variety of Japanese Daihatsu trucks and vans between 1970 and 2010. They have usually been Toyota-based, or otherwise based on models from the Toyota-owned Hino Motors. The t ...

, trucks *

Delta formation Delta formation is a flight pattern where multiple flying objects will come together in a V in order to fly more efficiently. Each trailing object is positioned slightly higher than the one in front, and uses the air moved by the forward object t ...

, V-shaped aircraft formation *

Delta wing A delta wing is a wing shaped in the form of a triangle. It is named for its similarity in shape to the Greek uppercase letter delta (Δ). Although long studied, it did not find significant applications until the Jet Age, when it proved suitabl ...

, a triangular aircraft wing * ''Delta''-class submarine (NATO reporting name), Soviet/Russian SSBN *

GM Delta platform Delta was a General Motors compact front-wheel drive automobile and crossover SUV platform, originally developed by Opel Group. Delta was a successor to the Opel T platform; it also replaced J platform and the Z platform used by the Saturn ...

, a car platform *

Lancia Delta The Lancia Delta is a small family car produced by Italian automobile manufacturer Lancia in three generations. The first generation (1979-1994) debuted at the 1979 Frankfurt Motor Show, the second generation (1993-1999) debuted at the 1993 Genev ...

, an Italian rally car *

Oldsmobile Delta 88 The Oldsmobile 88 (marketed from 1989 on as the Eighty Eight) is a full-size car that was sold and produced by Oldsmobile from 1949 until 1999. From 1950 until 1974, the 88 was the division's most profitable line, particularly the entry level mod ...

, a GM 1965–1983 *

TrikeBuggy Delta The TrikeBuggy Delta, Bullet and Transformer are a family of American ultralight trikes and powered parachutes, designed and produced by TrikeBuggy of Santa Barbara, California. The aircraft is supplied complete and ready-to-fly.Bayerl, Robby; Ma ...

, an American ultralight trike

Other uses in science and technology

* Refractory delta, in the roof of an

electric arc furnace An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to ab ...

* Delta, a quadra group used in

socionics Socionics, in psychology and sociology, is a pseudoscientific theory of information processing and personality types. It incorporates Carl Jung's work on '' Psychological Types'' with Antoni Kępiński's theory of information metabolism. Socioni ...

Delta baryon The Delta baryons (or baryons, also called Delta resonances) are a family of subatomic particle made of three up or down quarks (u or d quarks), the same constituent quarks that make up the more familiar protons and neutrons. Properties Four ...

, a subatomic particle * Delta circuit, in

three-phase electric power Three-phase electric power (abbreviated 3φ) is a common type of alternating current used in electricity generation, transmission, and distribution. It is a type of polyphase system employing three wires (or four including an optional neutral ...

Delta robot A delta robot is a type of parallel robot that consists of three arms connected to universal joints at the base. The key design feature is the use of parallelograms in the arms, which maintains the orientation of the end effector. In contrast, S ...

, a delta-shaped parallel robot *

Ilford Delta Ilford Delta is a series of photographic films manufactured by Harman Technology Limited. Delta films are tabular-grain black-and-white films, and originally released in 400 ISO only to compete with Kodak's T-Max film. Ilford recommends Del ...

, a photographic film

Sport

Delta (horse) Delta (1946–1960) was a champion Australian thoroughbred racehorse who raced from a two-year-old to a six year-old from distances of 6 furlongs to 2 miles. Champion jockey Neville Sellwood won 22 races including the 1949 VRC Derby, 1949 C ...

(1946–1960), Australia *

Mississippi Valley State Delta Devils and Devilettes The Mississippi Valley State Delta Devils and Devilettes (also MVSU and Mississippi Valley) represent Mississippi Valley State University in Itta Bena, Mississippi in intercollegiate athletics. They field thirteen teams including men and women's ...

, sports teams, Itta Bena, Mississippi, US * San Francisco Deltas, a soccer team *

Delta (orienteering club) Delta was an orienteering club in western Uusimaa of Finland. It formed in 1992 when three clubs started with joint teams and activities. Delta later dissolved in 2012. Hiidenkiertäjät then promised to keep training the best runners. The initi ...

, a former Finnish club

Other uses

Delta Dental The Delta Dental Plans Association is a network of dental insurance companies composed of 39 independent Delta Dental members operating in all 50 states, the District of Columbia and Puerto Rico. These member companies provide coverage to 85 mill ...

, an American system *

Delta Works The Delta Works ( nl, Deltawerken) is a series of construction projects in the southwest of the Netherlands to protect a large area of land around the Rhine–Meuse–Scheldt delta from the sea. Constructed between 1954 and 1997, the works con ...

, a flood-protection works in the Netherlands * Delta, a font designed by

Aldo Novarese Aldo Novarese (29 June 1920 – 16 September 1995) was an Italian type designer who lived and worked mostly in Turin. Training and career Born in 1920, he entered the G.B. Paravia Typographic School in Turin, where he obtained a diploma. In 193 ...

Diploma in Teaching English to Speakers of Other Languages DELTA is an English language teaching (ELT) qualification for experienced Teachers of English as a Foreign Language (TEFL) and Teachers of English to Speakers of Other Languages (TESOL). It is provided by Cambridge English Language Assessment thro ...