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	AC may refer to any of the following, broken down by subject area. Science Actinium Actinium Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. It was the first Primordial element to be isolated, although polonium, radium and radon were observed before, but not isolated until 1902.... (Ac), a chemical element Acetaldehyde Acetaldehyde Acetaldehyde is an organic compound with the chemical formula CarbonHydrogen3CHOxygen or MeCHO. It is a flammable liquid with a fruity smell.... (also Ac), an organic ion Acetate Acetate An acetate, or ethanoate, is either a salt or ester of acetic acid.In chemistry, the abbreviation Ac refers to the acetyl group. The anion and the functional group may be written as -OAc and AcO-, or OAc respectively.... (also Ac), an organic ion Acetyl Acetyl In organic chemistry, acetyl , is a functional group, the acyl of acetic acid, with chemical formula -CarbonOxygenCarbonHydrogen3. It is sometimes abbreviated as Ac .... (Ac), a functional group in chemistry Acromioclavicular joint in humans and other animals, frequently injured in sport Adenylate cyclase Adenylate cyclase Adenylate cyclase is a lyase enzyme.... , an enzyme Alpha Centauri Alpha Centauri Alpha Centauri ; is the brightest star in the southern constellation of Centaurus and an established binary star system, Alpha Centauri AB .... , a star system in the constellation Centaurus Alternating current Alternating current In alternating current the movement of electric charge periodically reverses direction. An electric charge would for instance move forward, then backward, then forward, then backward, over and over again.... , a type of electric current AC power AC power This article deals with power in AC systems. See Mains electricity for information on utility-supplied AC power.Power is defined as the rate of flow of energy past a given point.... , a net transfer of energy over a complete cycle of the alternating current waveform Anterior commissure Anterior commissure The Anterior Commissure is a bundle of nerve fibers , connecting the two cerebral hemispheres across the midline, and placed in front of the columns of the Fornix of brain.... , a small bundle of nerve fibres that connect the right and left temporal lobes Anticipated convection, the code for severe thunderstorm forecasts issued daily for the contiguous U.S. by the Storm Prediction Center Storm Prediction Center The Storm Prediction Center , located in Norman, Oklahoma, Oklahoma, is part of the National Centers for Environmental Prediction , operating under the control of the National Weather Service , which in turn is part of the National Oceanic and Atmospheric Administration of the United States United States Department of Commerce .... Armored Cable Power Cable Power Cable, Nebraska is a fiction town in United States used as a generic placename . It may have originated with Terry Pratchett, who dedicated Sourcery to its inhabitants, set a scene in Good Omens there, and made it the home of the publisher of Johnny Maxwell's encyclopedia, Universal Wonder Knowledge Data Printing Inc, in '... , a type of power cable used by electricians Artificial consciousness Artificial consciousness Artificial consciousness , also known as machine consciousness or synthetic consciousness, is a field related to artificial intelligence and cognitive robotics whose aim is to define that which would have to be synthesized were consciousness to be found in an engineered artifact.... Astrographic Catalogue, a star catalogue atto-coulomb Coulomb The coulomb is the SI unit of electric charge. It is named after Charles-Augustin de Coulomb.... (aC), an SI unit of electric charge Axiom of choice Axiom of choice In mathematics, the axiom of choice, or AC, is an axiom of set theory. Informally put, the axiom of choice says that given any collection of bins, each containing at least one object, it is possible to make a selection of exactly one object from each bin, even if there are infinite set many bins and there is no "rule" for which object t... , a mathematical set theory concept Places Aachen Aachen is a historic spa town in North Rhine-Westphalia, Germany. It is the westernmost city of Germany, located along its borders with Belgium and the Netherlands, 65 km west of Cologne.... - a German city, using AC as number plate code Acre (state) Acre (state) Acre is a States of Brazil of Brazil, located in the north-western part of the country. To the north is the state of Amazonas, Brazil, to the east is a short border with the state of Rond?nia, to the south is Bolivia and to the west is the Ucayali Region of Peru.... - a Brazilian state, using AC as abbreviation. Atlantic City, a Coastal City in New Jersey, U.S., known for its boardwalk, casino gambling, sandy beaches, and the inspiration for the board game Monopoly Västerbotten County Västerbotten County V?sterbotten County is a Counties of Sweden or l?n in the north of Sweden. It borders the counties of V?sternorrland County, J?mtland County, and Norrbotten County, as well as the Norway county of Nordland and the Gulf of Bothnia.... , Sweden Computing AC (complexity) AC (complexity) In circuit complexity, AC is a complexity class hierarchy. Each class, ACi, consists of the formal language recognized by Boolean circuits with depth and a polynomial of fanin AND gate and OR gates.... , a hierarchy of complexity classes found in circuit complexity .ac .ac .ac is the Internet country code top-level domain for Ascension Island. It is administered by NIC.AC, a subsidiary of the Internet Computer Bureau based in the United Kingdom.... , Internet top-level domain name for Ascension Island .ac (second level) .ac (second level) .ac is a second level domain for academic establishments, such as universities, colleges and research institutes in a number of countries such as New Zealand , the United Kingdom , India , Japan , Austria , Belgium , Iran , South Africa , and many more.... , Internet second-level domain used to denote academic institutions in many countries Anonymous Coward Anonymous Coward "Anonymous Coward" is a term applied within some online communities to describe users who post without a screen name ; it is a dummy name attributed to Anonymity posts used by some weblogs that allow posting by people without registering for accounts.... , in the Slashdot online environment Authorization certificate Authorization certificate In computer security, an authorization certificate is a digital document that describes a written permission from the issuer to use a service or a resource that the issuer controls or has access to use.... or attribute certificate, a digital permission to use a service or resource Arctic Cooling Arctic Cooling Arctic Cooling is a Switzerland maker of coolers for Computer hardware, most notably heat sinks and Fan_.... , a Swiss manufacturer of heatsinks, cooling fans and computer cases. Auto clicker Auto clicker Auto clickers are a type of software or Macro that can be used to automate clicking. They can be triggered to generate input that was recorded earlier or generated from various current settings.... s, which are commonly referred to in MMORPGs as ACs. Transportation AC Cars AC Cars AC Cars Group Ltd. formerly known as Auto Carriers Ltd. is a United Kingdom specialist automobile manufacturer and one of the oldest independent car marques founded in Britain.... , a brand of automobile AC Cobra AC Cobra The AC Cobra was a United Kingdom built and designed sports car that was produced during the 1960s.... , an Anglo-American sports car AC Propulsion AC Propulsion AC Propulsion is a San Dimas, California, USA company founded in 1992 by Alan Cocconi. Tom Gage is currently the company's CEO. They produce goods such as electric vehicle drive systems and their top of the line electric sports car, the AC Propulsion tzero.... a producer of electric vehicle drive systems in San Dimas, California, USA AC Schnitzer AC Schnitzer AC Schnitzer Automobile Technik is a third party tuning company based in Aachen, Germany specializing in BMW and BMW MINI cars, as well as BMW motorcycles.... , an aftermarket tuner of BMW automobiles Hyundai Aero City Hyundai Aero City The Hyundai Aero City is a heavy-duty bus built by Hyundai Motor Company and primarily used as a city and intercity bus. It is distinguishable by a front 'Aero City' badge, but the common Hyundai badge is usually on the rear.... , a bus built by the Hyundai Motor Company Air Canada Air Canada Air Canada is Canada's largest airline and flag carrier. The airline, founded in 1936, provides scheduled and charter air transportation for passengers and cargo to 160 destinations worldwide.... , as its IATA airline designator Aircraft Aircraft An aircraft is a vehicle which is able to flight by being supported by the air, or in general, the atmosphere, of a planet. Examples include balloons, airplanes and helicopters.... (usually A/C) Algoma Central Railway Algoma Central Railway The Algoma Central Railway is a railway in Northern Ontario that ran between Sault Ste. Marie, Ontario and Hearst, Ontario, with a branch line to Michipicoten, Ontario.... , a now out-of-service railway in Northern Ontario, Canada AC Transit AC Transit AC Transit is a regional bus agency serving parts of Alameda County, California and Contra Costa County, California in the western coastal area of the East Bay of the San Francisco Bay Area, headquartered in Oakland, California.... , a public bus transit system in Oakland, California Job titles / ranks A person appointed Companion Of The Order Of Australia Order of Australia The Order of Australia is an Order established by Elizabeth II of the United Kingdom, Monarchy of Australia on 14 February 1975 "for the purpose of according recognition to Australian citizens and other persons for achievement or for meritorious service".... Aircraftman Aircraftman Aircraftman , or Aircraftwoman , is the lowest rank in the Royal Air Force and the air forces of several other Commonwealth of Nations countries.... Assistant Commissioner of Police of the Metropolis Assistant Commissioner of Police of the Metropolis Assistant Commissioner of Police of the Metropolis, usually just Assistant Commissioner , is the third highest rank in London's Metropolitan Police Service, ranking below Deputy Commissioner of Police of the Metropolis and above Deputy Assistant Commissioner.... Aelod y Cynulliad, the title for Members of the National Assembly for Wales National Assembly for Wales The National Assembly for Wales is a devolution National Assembly with power to make legislation in Wales. The Assembly comprises 60 members, who are known as Assembly Member, or AMs .... Sports Associazione Calcio (Italian for "Football (soccer) Association"), an identifier frequently found in the names of football Football (soccer) Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players, and is widely considered to be the most popular sport in the world.... clubs in Italy Italy Italy , officially the Italian Republic , is a country located on the Italian Peninsula in Southern Europe and on the two largest islands in the Mediterranean Sea, Sicily and Sardinia.... , most notably: A.C. Milan A.C. Milan Associazione Calcio Milan, commonly referred to as AC Milan and as simply Milan in Italy, are an Italian professional Association football sports club based in Milan, Lombardy.... , one of the most storied clubs in that country Athletic Club Athletic Bilbao Athletic Club is a Spanish Basque football club from Bilbao in Biscay, Basque Country , Spain. The club has played in the Primera Divisi?n of La Liga since its start in 1928.... Abbreviation for Athletic Athletics (track and field) Track and field athletics, commonly known as athletics or track and field, is a collection of sports events that involve running, throwing and jumping.... club Arts Artist's copy. The copy of a three-dimensional object that is retained by the artist or publisher. Similar in nature to an artist's proof, it is usually the same as the edition but is a separate or additional publication. Entertainment The name of the ultimate computer at the end of time in Isaac Asimov's The Last Question The Last Question "The Last Question" is a science fiction short story by Isaac Asimov. It first appeared in the November 1956 issue of Science Fiction Quarterly and was reprinted in the collections Nine Tomorrows , The Best of Isaac Asimov and Robot Dreams , as well as the retrospective Opus 100 .... After Colony, an alternate timeline in the Gundam metaseries for the universe of Gundam Wing Albert Clifford "A.C." Slater Saved by the Bell *Saved by the Bell* is an United States teen drama that originally aired between 1989 and 1993. The series is a retooled version of the 1988 series Good Morning, Miss Bliss, which was itself later retroactive continuity into the history of Saved by the Bell.... , a character in the American sitcom Saved by the Bell "Alt Cataclius" or "After Cataclysm", a historical era in the timeline for the Dragonlance fictional universe Dragonlance timeline The Alternate history in the fictional universe of Dragonlance utilises a calendar centred around Cataclysm . The Cataclysm was an event that changed life across the surface of the planet Krynn.... Armor Class Armor class In some role-playing games, Armor Class is a derived statistic which indicates how difficult it is to hit a character with an attack.In earlier versions of Dungeons & Dragons, a lower Armor Class indicated that a creature was more difficult to hit.... , a combat-related parameter in the Dungeons & Dragons role playing game system Final Fantasy VII Advent Children, a movie sequel to the game Final Fantasy VII Arthur Curry, who goes by his initials during an appearance on Smallville Video games Animal Crossing (series), a series of real-time village simulations by Nintendo Assassin's Creed Assassin's Creed *Assassin's Creed* is a Nonlinear gameplay Action-adventure game video game developed by Ubisoft Montreal and published by Ubisoft. It was released worldwide in November 2007 on the Xbox 360 and PlayStation 3 video game consoles.... , a platformer/stealth video game AssaultCube AssaultCube AssaultCube is a fast paced first-person shooter based upon the Cube engine. Although its main focus is online play, a single player mode exists which consists of computer-controlled computer game bots.... , a first-person shooter based upon the Cube engine Armored Core Armored Core *Armored Core* is a mecha-based video game series for the PlayStation Portable, PlayStation, PlayStation 2, PlayStation 3, Xbox 360 and Mobile Phone platforms.... , a video game series featuring the eponymous robotic fighter under the player's control. Asheron's Call Asheron's Call *Asheron's Call* is a fantasy MMORPG for Microsoft Windows-based PCs, released on November 2, 1999. The land of Dereth and its surrounding islands, in which the game is based, is a large, seamless 3D world that is occupied by hundreds of players.... , a fantasy massively multiplayer online role-playing genre The Ace Combat Ace Combat Ace Combat is an arcade style Flight Action video game series published by the Japanese company Namco Bandai Games. Emphasizing action and dramatic plots over realism, the series has established itself in Japan, and the world as a prime example of the pseudo realistic flight action genre.... series of combat flight simulator games "AC" is sometimes used as an abbreviation for "arcade Arcade game An arcade game is a coin-operated entertainment machine, typically installed in businesses such as restaurants, public houses, video arcades, and Family Entertainment Centers.... ". Therefore, it is often used as a suffix to designate a new or separate version of a game, or even merely as the abbreviation for a revision: Melty Blood: Act Cadenza, a two-dimensional fighting game featuring characters from Tsukihime Guilty Gear XX Accent Core, a two-dimensional fighting game, part of the Guilty Gear series Tekken 5 Tekken 5 is the fifth installment in the popular Tekken series.... on the PlayStation 2 features a mode that allows one to play the arcade versions of Tekken, Tekken 2, and Tekken 3, labeled "AC" Alliance Character as used by Horde players in the MMORPG MMORPG A massively multiplayer online role-playing game is a genre of computer role-playing games in which a large number of player interact with one another in a virtual world.... World of Warcraft World of Warcraft *World of Warcraft, often referred to as WoW, is a massively multiplayer online role-playing game . It is Blizzard Entertainment's fourth released game set in the fantasy Warcraft universe, which was first introduced by Warcraft: Orcs & Humans* in 1994 in video gaming.... Arvoch Conflict Arvoch Conflict Arvoch Conflict is the latest military spacesim in the StarWraith 3D Games series. It is technically a successor to Star Wraith IV: Reviction; however, it is not generally considered a game in the Starwraith franchise, but a separate franchise altogether.... , a shareware flight simulator by Star Wraith 3D Games Music AC/DC AC/DC AC/DC are an Australian rock music rock band formed in Sydney in 1973 by brothers Malcolm Young and Angus Young. Although the band are commonly classified as hard rock, and considered pioneers of heavy metal music, they have always classified their music as "rock and roll".... , a rock group Adult contemporary music Adult contemporary music Adult contemporary music refers to a broad style of popular music that ranges from lush 1960s, vocal music-based music to predominantly ballad-heavy music with varying degrees of rock music influence".... , a music genre also used to describe broadcast radio stations Animal Collective Animal Collective Animal Collective is a music collective of avant-garde musicians originally from Baltimore, Maryland. Animal Collective consists of Avey Tare , Panda Bear , Deakin, or Deacon as spelled on Strawberry Jam , and Geologist .... , an experimental musical collective. Anal Cunt Anal Cunt Anal Cunt is an United States grindcore band, originating in Newton, Massachusetts. They have been categorized as grindcore, noisecore, and Hardcore punk.... , a grindcore band. Organizations Alianza Costeña Alternativa por el Cambio, a political party in Nicaragua Anglican Communion Anglican Communion The Anglican Communion is an international association of national Anglican churches. There is no single "Anglican Church" with universal juridical authority as each national or regional church has full autonomy.... Akademikernes Centralorganisation, the Danish Confederation of Professional Associations Danish Confederation of Professional Associations The Danish Confederation of Professional Associations is an umbrella organisation for Denmark trade unions, founded in 1972.The AC works with the two other Danish trade union centres, the Danish Confederation of Trade Unions and the Salaried Employees' and Civil Servants' Confederation .... . Civic Alliance Foundation Civic Alliance Foundation The Civic Alliance Foundation is a Romanian non-governmental organization . It is one of the largest Romanian NGOs, working for the consolidation of a civil society in the aftermath of the 42-year long Communist Romania.... , a Romanian NGO. Astronomy club, common in schools and tertiary institutions. Ad Council Ad Council The Advertising Council, commonly known as the Ad Council, is an United States non-profit organization that distributes public service announcements on behalf of various sponsors, including non-profit organizations and agencies of the Federal government of the United States.... Japan Ad Council Japan Ad Council The Japan Advertising Council, commonly known as the Japan Ad Council , is a private non-profit organization that distributes Japanese public service announcements on behalf of various sponsors, including both non-profit organizations and government agencies.... Ayala Corporation Ayala Corporation Ayala Corporation is a holding company for the diversified interests of the Ayala Group. It was founded in 1834 and is the oldest and largest Conglomerate operating in the Philippines.... , via its ticker symbol "AC". Asociación Civil Asociación Civil Asociaci?n Civil can refer to:The legal systems of many Spanish language countriesA is a non profit organization... , a title for non profit organizations in Spanish Spanish language Spanish or Castilian is a Romance languages that originated in northern Spain, and gradually spread in the Kingdom of Castile and evolved into the principal language of government and trade.... speaking countries. Schools Atlantic College Atlantic College The United World College of the Atlantic, more commonly referred to simply as Atlantic College, is an internationally prestigious school in south Wales for 16 - 18 year olds.... , one of the twelve United World Colleges United World Colleges The United World Colleges are a group of twelve international schools. Founded during the Cold War, the United World College Movement aimed at promoting understanding between the different nations through education and through interaction between young people from different countries, living and working together.... . Abbreviation for Assumption College Assumption College Assumption College is a private, Catholic, Liberal arts colleges in the United States located on 185 acres in Worcester, Massachusetts. Assumption has an enrollment of approximately 2,150 students.... located in Worcester, Massachusetts Worcester, Massachusetts Worcester is a city in the U.S. state of Massachusetts in the United States. A 2006 estimate put the population at 175,898, making it the estimated second-largest city in New England, after Boston, Massachusetts.... . Abbreviation for Austin College Austin College Austin College is a private university Liberal arts colleges in the United States affiliated with the Presbyterian Church and located in Sherman, Texas, an hour north of Dallas.... located in Sherman, Texas Sherman, Texas Sherman is a city in and the county seat of Grayson County, Texas, Texas, United States. The city's estimated population as of 2007 was 37,710. It is also one of two principal cities in the Sherman-Denison Metropolitan Statistical Area.... . Abbreviation for Aquinas College Aquinas College, Perth Aquinas College is a Roman Catholic private school, Day school and boarding school for boys, located in Salter Point, Western Australia, Western Australia.... located in Perth, Western Australia. Miscellaneous Another name for the Ansuz rune Ansuz rune The a-rune , Younger Futhark was probably named after the ?sir, in Proto-Germanic language Ansuz.The shape of the rune is likely from Old Italic alphabet a , like Latin A ultimately from Phoenician alphabet Aleph .... Air conditioning Air conditioning An air conditioner* is an appliance, system, or Mechanism designed to extract heat from an area via a refrigeration cycle. In construction, a complete system of heating, Ventilation , and air conditioning is referred to as "HVAC." Its purpose, in a building or an automobile, is to provide comfort during either hot or cold... (and air conditioner), the mechanical process of cooling air in enclosed spaces Andrew Christian Andrew Christian Andrew Christian is a fashion designer. He became interested in fashion from an early age and knew that is what he wanted to do with his life.... , a American fashion designer Ante Christum, (AC), Latin Latin Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe.... meaning "before Christ Christ Christ is the English language term for the Greek meaning "the anointing", which is a title given to the Reigning Messiah in the given age of the Zodiac.... " or BC Anthrocon Anthrocon Anthrocon is the world's largest furry convention, taking place in Pittsburgh, Pennsylvania each June. Its focus is on furry fandom: fictional anthropomorphism animal characters in art and literature.... , a furry fandom convention Antichrist Antichrist The Antichrist is one who fulfills Biblical prophecies concerning an adversary of New Testament view on Jesus' life while resembling him in a deceptive manner.... , in the Christian religion Animal communication Animal communication Animal communication is any behaviour on the part of one animal that has an effect on the current or future behaviour of another animal. The study of animal communication, sometimes called zoosemiotics has played an important part in the development of ethology, sociobiology, and the study of animal cognition.... Average cost Average cost In economics, average cost is equal to total cost divided by the number of goods produced . It is also equal to the sum of average variable costs plus average fixed costs .... , in economics post-nominal Post-nominal letters Post-nominal letters, also called post-nominal initials or post-nominal titles, are letters placed after the name of a person to indicate that the individual holds a position, educational degree, accreditation, office, or honour.... AC Order of Australia Order of Australia The Order of Australia is an Order established by Elizabeth II of the United Kingdom, Monarchy of Australia on 14 February 1975 "for the purpose of according recognition to Australian citizens and other persons for achievement or for meritorious service".... , Companion Naval auxiliary ship serving as a collier List of auxiliaries of the United States Navy This is a list of auxiliaries of the United States Navy. It covers the various types of ships that support the frontline combat vessels of the United States Navy.... (Auxilary Collier) in the U.S. Navy's list of hull classifications List of hull classifications The list of hull classifications comprises an alphabetical list of the hull classification symbols used by the United States Navy to identify the type of a ship....