An, AN, aN, or an may refer to:

Businesses and organizations

* Airlinair (IATA airline code AN) *

Alleanza Nazionale National Alliance ( it, Alleanza Nazionale, AN) was a conservative political party in Italy.Luciano Bardi - Piero Ignazi - Oreste Massari, ''I partiti italiani'', Egea 2007, pp. 151, 173n. It was the successor of the Italian Social Movement (MSI ...

, a former political party in Italy * AnimeNEXT, an annual anime convention located in New Jersey *

Anime North Anime North (AN) is a non-profit, fan-run anime convention, held every year in Etobicoke, a district in Toronto, Ontario, Canada. Its major attractions, activities and events include a Masquerade, a Dealers Room, an Artists Alley, Guest of Ho ...

, a Canadian anime convention *

Ansett Australia Ansett Australia was a major Australian airline group, based in Melbourne, Australia. The airline flew domestically within Australia and from the 1990s to destinations in Asia. After operating for 65 years, the airline was placed into admini ...

, a major Australian airline group that is now defunct (IATA designator AN) * Apalachicola Northern Railroad (reporting mark AN) 1903–2002 ** AN Railway, a successor company, 2002– *

Aryan Nations Aryan Nations is a North American antisemitic, neo-Nazi, white supremacist organization that was originally based in Kootenai County, Idaho, about miles (4.4 km) north of the city of Hayden Lake. Richard Girnt Butler founded the group i ...

, a white supremacist religious organization *

Australian National Railways Commission The Australian National Railways Commission was an agency of the Government of Australia that was a railway operator between 1975 and 1998. It traded as Australian National Railways (ANR) in its early years, before being rebranded as Australian ...

, an Australian rail operator from 1975 until 1987 *

Antonov Antonov State Enterprise ( uk, Державне підприємство «Антонов»), formerly the Aeronautical Scientific-Technical Complex named after Antonov (Antonov ASTC) ( uk, Авіаційний науково-технічни� ...

, a Ukrainian (formerly Soviet) aircraft manufacturing and services company, as a model prefix

Entertainment and media

* Antv, an Indonesian television network * ''

Astronomische Nachrichten ''Astronomische Nachrichten'' (''Astronomical Notes''), one of the first international journals in the field of astronomy, was established in 1821 by the German astronomer Heinrich Christian Schumacher. It claims to be the oldest astronomical jou ...

'', or ''Astronomical Notes'', an international astronomy journal * '' Avisa Nordland'', a Norwegian newspaper * '' Sweet Bean'' (あん), a 2015 Japanese film also known as ''An''

Language

* An,

English indefinite article The articles in English language, English are the definite article ''the'' and the indefinite articles ''a'' and ''an''. The definite article is used when the speaker believes that the listener knows the identity of the noun's referent (because ...

Anglo-Norman language Anglo-Norman, also known as Anglo-Norman French ( nrf, Anglo-Normaund) (Standard French, French: ), was a dialect of Old Norman French that was used in Kingdom of England, England and, to a lesser extent, elsewhere in Great Britain and Ireland du ...

Aragonese language Aragonese ( ; in Aragonese) is a Romance language spoken in several dialects by about 12,000 people as of 2011, in the Pyrenees valleys of Aragon, Spain, primarily in the comarcas of Somontano de Barbastro, Jacetania, Alto Gállego, Sob ...

(ISO 639-1:2002 language code AN) * Algemeen Nederlands (meaning "Common Dutch"), the official Dutch language * A variant of the

prefix A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix ''un-'' is added to the word ''happy'', it creates the word ''unhappy''. Particu ...

"in", used before vowels to convey the meaning "not" (for example: aneuploid means "not euploid")

Mathematics, science, and technology

* ''A_n'', in mathematics, a

root system In mathematics, a root system is a configuration of vectors in a Euclidean space satisfying certain geometrical properties. The concept is fundamental in the theory of Lie groups and Lie algebras, especially the classification and representat ...

and its Dynkin diagram * ''A_n'', in mathematics, conventional notation for the

alternating group In mathematics, an alternating group is the group of even permutations of a finite set. The alternating group on a set of elements is called the alternating group of degree , or the alternating group on letters and denoted by or Basic pr ...

* ''a_n'', a generic label for a term of a

sequence In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members (also called ''elements'', or ''terms''). The number of elements (possibly infinite) is called ...

AN thread The AN thread (also A-N) is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. It is a US military-derived specification that dates back to World War II and stems from a joint standard agreed upon ...

, Army and Navy thread - for bolts and tube fittings in 16th inch increments *

Acanthosis nigricans Acanthosis nigricans is a medical sign characterised by brown-to-black, poorly defined, velvety hyperpigmentation of the skin. It is usually found in body folds, such as the posterior and lateral folds of the neck, the armpits, groin, navel, f ...

, a skin condition *

Acrylonitrile Acrylonitrile is an organic compound with the formula and the structure . It is a colorless, volatile liquid although commercial samples can be yellow due to impurities. It has a pungent odor of garlic or onions. In terms of its molecular ...

, an organic compound and monomer used in the manufacture of certain plastics *

Actinide The actinide () or actinoid () series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The actinide series derives its name from the first element in the series, actinium. The inf ...

(An), informal symbol for a series of chemical elements *

Ammonium nitrate Ammonium nitrate is a chemical compound with the chemical formula . It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates. It ...

(AN), a chemical compound *

Anode An anode is an electrode of a polarized electrical device through which conventional current enters the device. This contrasts with a cathode, an electrode of the device through which conventional current leaves the device. A common mnemoni ...

, in electronic schematics *

Anorexia nervosa Anorexia nervosa, often referred to simply as anorexia, is an eating disorder characterized by underweight, low weight, Calorie restriction, food restriction, body image disturbance, fear of gaining weight, and an overpowering desire to be thi ...

, an eating disorder * Application note (in engineering), most often seen as A.N. * Attonewton (aN), an SI unit of force * Anorthite, a feldspar mineral

Military

* A prefix used by the U.S. military for electronic equipment named under the

Joint Electronics Type Designation System The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army-Navy Nomenclature System (AN System. JAN) and the Joint Communications-Electronics Nomenclature System, is a method developed by the U.S. War Depa ...

Net laying ship A net laying ship, also known as a net layer, net tender, gate ship or boom defence vessel was a type of naval auxiliary ship. A net layer's primary function was to lay and maintain steel anti-torpedo or anti-submarine nets. Nets could be laid ...

(US Navy hull classification symbol AN) * ''Avtomat Nikonova'' used for the

AN-94 The AN-94 (Russian: 5,45-мм автомат Никонова обр. 1987 г. / АН-94 «Абака́н», GRAU designation 6P33) is a Russian assault rifle. The initials stand for ''Avtomat Nikonova'' model of 1994, after its chief designer ...

Names

Ahn (Korean name) Ahn, also romanized An, is a Korean family name. 109 Korean clans are named 'Ahn', but with different origins. In 2000, there were 637,786 people bearing this surname in South Korea, making it the 20th most common family name in the country, with r ...

(安) * An (surname) (安), Chinese surname

Places

An County Anzhou District () formerly An County is a district of the city of Mianyang, in northeastern Sichuan province, China. It has an area of and a population of 440,000. Administrative divisions Anzhou has 15 towns and three townships A township i ...

, in Sichuan, China * Agios Nikolaos (disambiguation), a common place name in Greece and Cyprus * Province of Ancona, a province of Italy (ISO 3166-2:IT code AN) *

Andaman and Nicobar Islands The Andaman and Nicobar Islands is a union territory of India consisting of 572 islands, of which 37 are inhabited, at the junction of the Bay of Bengal and the Andaman Sea. The territory is about north of Aceh in Indonesia and separated ...

, a territory in southeastern India (ISO 3166 code AN) *

Anderson County, Kansas Anderson County (county code AN) is a county located in East Central Kansas, in the Central United States. As of the 2020 census, the county population was 7,836. Its county seat and most populous city is Garnett. History Early history F ...

(state county code AN) *

Andorra , image_flag = Flag of Andorra.svg , image_coat = Coat of arms of Andorra.svg , symbol_type = Coat of arms , national_motto = la, Virtus Unita Fortior, label=none ( Latin)"United virtue is str ...

(obsolete NATO country code AN) *

Angola , national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...

(World Meteorological Organization country code AN) * Netherlands Antilles (ISO country code AN)

Religion

An (Shintō) The is a small table, desk or platform used during Shinto Shinto () is a religion from Japan. Classified as an East Asian religion by scholars of religion, its practitioners often regard it as Japan's indigenous religion and as a nature ...

, a small table or platform used during Shinto ceremonies *

Anu Anu ( akk, , from wikt:𒀭#Sumerian, 𒀭 ''an'' “Sky”, “Heaven”) or Anum, originally An ( sux, ), was the sky father, divine personification of the sky, king of the gods, and ancestor of many of the list of Mesopotamian deities, dei ...

or An, a god in Sumerian and Babylonian mythology

Other uses

* Associate degree in

nursing Nursing is a profession within the health care sector focused on the care of individuals, families, and communities so they may attain, maintain, or recover optimal health and quality of life. Nurses may be differentiated from other health ...

* Algebraic notation (chess) (AN), the standard system for recording moves in chess