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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 come ...
(Δ or δ), a letter of the Greek alphabet * River delta, at a river mouth * D ( NATO phonetic alphabet: "Delta") * Delta Air Lines, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also refer to:


Places


Canada

* Delta, British Columbia ** Delta (electoral district), a federal electoral district ** Delta (provincial electoral district) * Delta, Ontario


United States

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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 Yazoo ...
* 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 headquarter ...
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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, Keokuk County, Iowa, United States. The population was 264 at the 2020 United States Census, 2020 census. Geography Delta is located at (41.324112, -92.329481). According to the United States Census Bureau ...
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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 Illino ...
* Delta, Louisiana *
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 in ...
*
Delta, North Carolina Delta is an unincorporated area, unincorporated community in Stokes County, North Carolina, Stokes County, North Carolina, United States. Unincorporated communities in Stokes County, North Carolina Unincorporated communities in North Caroli ...
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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 in ...
*
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 education ...
* Sacramento–San Joaquin River Delta, 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 ori ...
*
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 partia ...
, 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 bord ...
* Delta County (disambiguation)


Elsewhere

* Delta Island, Antarctica * Delta Stream, Antarctica * Delta, Minas Gerais, Brazil * Nile Delta, Egypt * Delta, Thessaloniki, 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''


Film and television

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


Music

* alt-J (∆), British indie band * Delta blues, a music style * "Delta", a song by Crosby, Stills & Nash from ''Daylight Again'', 1982


Albums

* Delta (video album), ''Delta'' (video album), 2003, Delta Goodrem * Delta (Delta Goodrem album), ''Delta'' (Delta Goodrem album), 2007 * Delta (Visions of Atlantis album), ''Delta'' (Visions of Atlantis album), 2011 * Delta (Mumford & Sons album), ''Delta'' (Mumford & Sons album), 2018 * ''Delta'', by Shapeshifter (band), Shapeshifter, 2013


Other media

* Delta (magazine), ''Delta'' (magazine), a poetry magazine * Delta (science magazine), ''Delta'' (science magazine) * Delta (video game), ''Delta'' (video game), 1987 * Delta FM or Delta Radio, a former UK radio station


Businesses and organizations


Companies

* Delta Air Lines, US ** Delta Connection, 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 * Former Delta Motors Corporation, 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)


Military

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


Finance

* Delta (finance), 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 (born 1956), American actress * Delta Goodrem (born 1984), Australian singer * Delta Work, drag queen * Penelope Delta (1874–1941), Greek author * Delta (wrestler) (born 1985), Mexican


Science, technology, and mathematics

* The upper- and lower-case Greek letter Delta (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#Optical isomerism, coordination complex *Allene#Delta convention, Delta convention, for designating allenes * Δ is used to specify certain Fatty acid#Carbon atom numbering, fatty acids


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#Programming, OpenVMS debugger


Earth sciences

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


Mathematics

* Δ, a difference of state between two before and after state schemas in the Z notation * \delta, the first Feigenbaum constant * Delta connective, a unary connective in t-norm fuzzy logics * Delta method for approximating the distribution of a function * Difference operator (Δ) * Dirac delta function ( function) * Kronecker delta (\delta_) * Laplace operator (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), 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) 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 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 * GM 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 uses in science and technology

* Refractory delta, in the roof of an electric arc furnace * Delta, a quadra group used in socionics#Quadras, socionics * 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


Sport

* Delta (horse) (1946–1960), Australia * Mississippi Valley State Delta Devils and Devilettes, sports teams, Itta Bena, Mississippi, US * San Francisco Deltas, a soccer team * Delta (orienteering club), a former Finnish 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


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 ( \delta_), a function * Dirac delta ( \delta(x)), a function * \Delta ABC, represents 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 of 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