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AF, af, Af, etc. may refer to:


Arts and entertainment

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A-F Records A-F Records was an American independent record label founded by punk rock band Anti-Flag – namely the band's drummer Pat Thetic, their rhythm guitarist Chris Head, and their lead vocalist Justin Sane – and based in Pittsburgh, Pennsylvania. ...
, Pittsburgh, Pennsylvania *''
Almost Family ''Almost Family'' is an American drama television series based on the Australian television series ''Sisters'', developed by Annie Weisman which aired from October 2, 2019, to February 22, 2020, on Fox. In March 2020, Fox canceled the series a ...
'', US TV series


Businesses and organizations


European

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Ã…F AFRY AB (publ) is a Swedish-Finnish supplier of engineering, design, and advisory services, with a global reach. The company originates from Sweden and it was formed in 1895 under the name of "The Southern Swedish Steam Generator Association" ...
, a Swedish technical consulting company *
AF Gruppen The AF Group ASA () () is the third largest civil engineering and construction company in Norway. The company headquarters is located in Oslo. The AF Group is listed on the Oslo Stock Exchange. History The AF Group was established in 1985. Th ...
, a construction company, Norway *
Action Française ''Action Française'' (, AF; ) is a French far-right monarchist and nationalist political movement. The name was also given to a journal associated with the movement, '' L'Action Française'', sold by its own youth organization, the Camelot ...
, a French political movement *
Air France Air France (; legally ''Société Air France, S.A.''), stylised as AIRFRANCE, is the flag carrier of France, and is headquartered in Tremblay-en-France. The airline is a subsidiary of the Air France-KLM Group and is one of the founding members ...
, IATA code and stock symbol *
Anarchist Federation (British Isles) The Anarchist Federation (AF, AFed) is a federation of anarcho-communists in Great Britain. It is not a political party, but a direct action, agitational and propaganda organisation. History The British anarchist movement had been revitalized ...


International

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Abercrombie & Fitch Abercrombie & Fitch Co. (A&F) is an American lifestyle store, lifestyle retailer, founded in 1892 which focuses on contemporary clothing targeting customers in their early 20's to mid 40's. Headquartered in New Albany, Ohio, the company operate ...
, A&F, US clothing shops *
The Adaptation Fund The Adaptation Fund is an international fund that finances projects and programs aimed at helping developing countries to adapt to the harmful effects of climate change. It is set up under the Kyoto Protocol of the United Nations Framework Conventio ...
, for climate change adaptation, UN *
Adventist Forums The Seventh-day Adventist Church (SDA) is an Adventist Protestant Christian denomination which is distinguished by its observance of Saturday, the seventh day of the week in the Christian (Gregorian) and the Hebrew calendar, as the Sabbath ...
, of Seventh-day Adventists


Elsewhere

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American Freightways American Freightways Corp. (AF) was an American regional less than truckload (LTL) carrier based in Harrison, Arkansas. It was acquired by FedEx in 2001, renamed FedEx Freight East in 2002, and its operations were merged with FedEx's other LTL su ...
, US trucking company, merged into FedEx Freight


Language

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Académie française An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of tertiary education. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the go ...
, for French language matters *
Alliance Française (; "French Alliance", stylised as ''af'') is an international organization that aims to promote the French language and francophone culture around the world. Created in Paris on 21 July 1883 under the name ''Alliance française pour la propa ...
, promoting French language and culture *
Acronym Finder Acronym Finder (AF) is a free, online, searchable dictionary and database of abbreviations (acronyms, initialisms, and others) and their meanings. The entries are classified into categories such as ''Information technology, Information Technolog ...
, an online database *
Afrikaans language Afrikaans is a West Germanic language spoken in South Africa, Namibia and to a lesser extent Botswana, Zambia, Zimbabwe and also Argentina where there is a group in Sarmiento that speaks the Patagonian dialect. It evolved from the Dutc ...
(ISO 639-1 language code AF) * "...as fuck", meaning "very", in
SMS language Short Message Service (SMS) language or textese is the abbreviated language and slang commonly used in the late 1990s and early 2000s with mobile phone text messaging, and occasionally through Internet-based communication such as email and ins ...


Medicine

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Amniotic fluid The amniotic fluid is the protective liquid contained by the amniotic sac of a gravid amniote. This fluid serves as a cushion for the growing fetus, but also serves to facilitate the exchange of nutrients, water, and biochemical products betwee ...
*
Atrial fibrillation Atrial fibrillation (AF, AFib or A-fib) is an Heart arrhythmia, abnormal heart rhythm (arrhythmia) characterized by fibrillation, rapid and irregular beating of the Atrium (heart), atrial chambers of the heart. It often begins as short periods ...
, an abnormal heart rhythm


Military

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AF Guardian The Grumman AF Guardian is the first purpose-built anti-submarine warfare (ASW) carrier-based aircraft to enter service with the United States Navy.Kowalski 1991, p. 3. It consisted of two airframe variants, one for detection gear, the other fo ...
, a US Navy warplane *
Air force An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
*
Armed forces A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a ...
* A US Navy hull classification symbol: Provisions store ship (AF)


Places

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Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. It is bordered by Pakistan to the Durand Line, east and south, Iran to the Afghanistan–Iran borde ...
, by 2-letter ISO, FIPS 10-4, LOC MARC and obsolete NATO country code ** .af, the top-level Internet domain for Afghanistan *
Agra Fort railway station Agra Fort railway station, is located near Agra Fort, in Rawatpara, Agra. It used to be one of the stations in India that had both broad gauge and metre gauge, until the line to Jaipur was converted to broad gauge. Agra Fort railway station co ...
, Rawatpara, India


Science and technology


Acoustics and communications

* Amplify-and-Forward, a scheme of
relay channel In information theory, a relay channel is a probability model of the communication between a sender and a receiver aided by one or more intermediate relay nodes. General discrete-time memoryless relay channel A discrete memoryless single-relay ...
*
Alternative frequency Alternative frequency (or AF) is an option that allows a receiver to re-tune to a different frequency that provides the same station, when the first radio signal becomes too weak (e.g. when moving out of range). This is often used in car stereo s ...
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Audio frequency An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. The generally accepted ...


Units of measure

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Acre-feet The acre-foot is a non- SI unit of volume equal to about commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows. An acre- ...
*
Attofarad The farad (symbol: F) is the unit of electrical capacitance, the ability of a body to store an electrical charge, in the International System of Units (SI), equivalent to 1 coulomb per volt (C/V). It is named after the English physicist Michae ...


Visual arts

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Autofocus An autofocus (AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system h ...
, of a camera *
Anisotropic filtering In 3D computer graphics, anisotropic filtering (AF) is a technique that improves the appearance of Texture filtering, textures, especially on surfaces viewed at sharp Viewing angle, angles. It helps make textures look sharper and more detailed ...


Other uses in science and technology

* Af, the Köppen climate classification for a
tropical rainforest climate A tropical rainforest climate or equatorial climate is a tropical climate sub-type usually found within 10 to 15 degrees latitude of the equator. There are some other areas at higher latitudes, such as the coast of southeast Florida, United States ...
* Across flats (A/F), a measure of hexagonal nut flat size *
Advanced Format Advanced Format (AF) is any disk sector format used to store data in HDDs, SSDs and SSHDs that exceeds 528 bytes per sector, frequently 4096, 4112, 4160, or 4224-byte sectors. Larger sectors of an Advanced Format Drive (AFD) enable the integratio ...
, large hard disk sectors *
Anaerobic filter In sewage treatment systems, an anaerobic filter (AF) is a form of anaerobic digester. The digestion tank contains a filter medium where anaerobic microbial populations—organisms that live in the absence of oxygen — can establish themselves. S ...
, a type of anaerobic digester *
Arcuate fasciculus In neuroanatomy, the arcuate fasciculus (AF; ) is a bundle of axons that generally connects Broca's area and Wernicke's area in the brain. It is an association fiber tract connecting caudal temporal lobe and inferior frontal lobe. Structure ...
, a nerve bundle in the brain


Other uses

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Alabama and Florida Railway The Alabama and Florida Railway was a short-line railroad headquartered in Andalusia, Alabama. It was owned and operated by Pioneer Railcorp of Peoria, Illinois. It operated a former Louisville and Nashville Railroad branch line from Andalusia ...
(reporting mark AF) * Anno Fascista, a year in the Italian Fascist calendar {{disambiguation