A4
Encyclopedia
A4, A04, A.IV, A.4 or A-4 may refer to:
- A4 paper, a paper size prevalent in many countries (210 × 297 mm), defined in the ISO 216 international standard
- A4, a type of stainless steel, as defined by ISO 3506, equivalent to SAE steel grade 316L
- A-004A-004A-004 was the sixth and final test of the Apollo launch escape vehicle and the first flight of a Block I production-type spacecraft.-Objectives:...
, the sixth and final abort test of the Apollo spacecraft - A4 - In the Dungeons of the Slave Lords, a 1981 module for the Dungeons and Dragons role playing game
- A4 roadA4 roadThe A4 is a major road in England, portions of which are known as the Great West Road and Bath Road. It runs from London to Avonmouth, near Bristol. Historically the road was the main route from London to the west of England, and has formed the second main western artery from London, after...
, in several countries - ATC code A04ATC code A04-A04AA Serotonin antagonists:-A04AA Serotonin antagonists:-A04AA Serotonin antagonists::A04AA01 Ondansetron:A04AA02 Granisetron:A04AA03 Tropisetron:A04AA04 Dolasetron:A04AA05 Palonosetron-A04AD Other antiemetics::A04AD01 Scopolamine...
Antiemetics and antinauseants, a subgroup of the Anatomical Therapeutic Chemical Classification System - Biu-Mandara A.4 languagesBiu-Mandara A.4 languagesThe Mandara–Lamang languages, group A.4 of the Biu–Mandara branch of the Afro-Asiatic family, are mainly spoken in Cameroon and Nigeria.The family is sometimes called simply Mandara, in which case the branch of Mandara languages is called Mandara proper.-Languages:LamangMandara*...
, an Afro-Asiatic family of languages mainly spoken in Cameroon and Nigeria - British NVC community A4 (Hydrocharis morsus-ranae - Stratiotes aloides community), a British Isles plants community
- Combretastatin A-4Combretastatin A-4Combretastatin A-4 is a combretastatin, a type of stilbenoid. It can be isolated from Combretum caffrum, the Eastern Cape South African Bushwillow tree.-Derivatives:...
, a stilbenoid chemical compound - M16A4, a variant of the American M16 rifle
- Route A4 (WMATA), a bus route operated by the Washington Metropolitan Area Transit Authority
- Apple A4Apple A4The Apple A4 is a package on package system-on-a-chip designed by Apple and manufactured by Samsung. It combines an ARM Cortex-A8 CPU with a PowerVR GPU, and emphasizes power efficiency. The chip commercially debuted with the release of Apple's iPad tablet; followed shortly by the iPhone 4...
, microprocessor used in Apple's iPadIPadThe iPad is a line of tablet computers designed, developed and marketed by Apple Inc., primarily as a platform for audio-visual media including books, periodicals, movies, music, games, and web content. The iPad was introduced on January 27, 2010 by Apple's then-CEO Steve Jobs. Its size and...
, iPhoneIPhoneThe iPhone is a line of Internet and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007...
4, 4th generation iPod TouchIPod TouchThe iPod Touch is a portable media player, personal digital assistant, handheld game console, and Wi-Fi mobile device designed and marketed by Apple Inc. The iPod Touch adds the multi-touch graphical user interface to the iPod line...
and 2nd generation Apple TV.
Aeronautics
- "A-4 Helldiver", the civil version of the Curtiss FalconCurtiss FalconThe Curtiss Falcon is a family of military biplane aircraft built by the United States aircraft manufacturer Curtiss Aeroplane and Motor Company during the 1920s. Most saw service as part of the United States Army Air Corps as observation aircraft with the designations O-1 and O-11, or as the...
an attack aircraft manufactured by Curtiss Aircraft Company - A-4 SkyhawkA-4 SkyhawkThe Douglas A-4 Skyhawk is a carrier-capable ground-attack aircraft designed for the United States Navy and United States Marine Corps. The delta winged, single-engined Skyhawk was designed and produced by Douglas Aircraft Company, and later McDonnell Douglas. It was originally designated the A4D...
, a 1954 attack aircraft manufactured by Douglas Aircraft Company - Breda A.4Breda A.4|-See also:-References:*...
, a 1926 Italian biplane trainer aircraft - Focke-Wulf A 4, a World War II German Focke-Wulf aircraft
Locomotives
- Bavarian A IVBavarian A IVBavarian A IV engines were German 2-2-2 steam locomotives with the Royal Bavarian State Railways .The vehicles were developed for night journeys and operations on the North-South Railway. In order to increase the area of the evaporator, the boiler was increased in length to 3,080 mm and in diameter...
, a 1852 German steam locomotive model - LNER Class A4LNER Class A4The Class A4 is a class of streamlined 4-6-2 steam locomotive, designed by Nigel Gresley for the London and North Eastern Railway in 1935. Their streamlined design gave them high-speed capability as well as making them instantly recognizable, and one of the class, 4468 Mallard, still claims the...
, a class of steam locomotives, including the famous Mallard - PRR A4, an American PRR steam locomotive
Other vehicles
- A-4, , a Plunger-class submarine of the United States Navy, which was renamed A-4 on 17 November 1911
- Arrows A4Arrows A4The Arrows A4 was the car which the Arrows Formula One team used to compete in the 1982 Formula One season....
, a 1982 British racing car - Audi A4Audi A4The first generation Audi A4 debuted in 1994, with production starting November 1994. It was built on the Volkswagen Group B5 platform, which it shared with the fourth generation Volkswagen Passat . It had a front-mounted longitudinal engine and front-wheel drive...
, a 1994 Audi luxury compact executive car - HMNZS Kahu (A04)HMNZS Kahu (A04)HMNZS Kahu was a Moa class inshore patrol vessel of the Royal New Zealand Navy. She was launched in 1979 as the lead boat of her class, modified to function as a diving tender. She was initially named HMNZS Manawanui , the second of three diving tenders with this name to serve in the New Zealand...
, a 1978 Royal New Zealand Navy Moa class inshore patrol vessel - HMS A4HMS A4HMS A4 was an early Royal Navy submarine.She was a member of the first British A-class of submarines. Like all her class, she was built at Vickers, Barrow-in-Furness....
, an A-class submarine of the Royal Navy - Prussian A 4, a 1913 German railbus
Other uses
- List of A4 roads
- See A (musical note)A (musical note)La or A is the sixth note of the solfège. "A" is generally used as a standard for tuning. When the orchestra tunes, the oboe plays an "A" and the rest of the instruments tune to match that pitch. Every string instrument in the orchestra has an A string, from which each player can tune the rest of...
for A4, in the fourth octave, at Hertz, also known as A-440 - A04, Encyclopaedia of Chess Openings code for Réti OpeningRéti OpeningThe Réti Opening is a hypermodern chess opening whose traditional or classic method begins with the moves:White plans to bring the d5-pawn under attack from the flank, or entice it to advance to d4 and undermine it later...
- A4, a Grade (climbing)Grade (climbing)In rock climbing, mountaineering and other climbing disciplines, climbers give a climbing grade to a route that concisely describes the difficulty and danger of climbing the route...
- A4, Southern Winds Airlines, the defunct Argentine airline, as its IATA code
- A4, the V-2 rocketV-2 rocketThe V-2 rocket , technical name Aggregat-4 , was a ballistic missile that was developed at the beginning of the Second World War in Germany, specifically targeted at London and later Antwerp. The liquid-propellant rocket was the world's first long-range combat-ballistic missile and first known...
, as the actual model number for the German weapon - A4, the code for permission to use specific land or premises for pubs and bars in town and country planning in the UKTown and country planning in the United KingdomTown and Country Planning is the land use planning system governments use to balance economic development and environmental quality. Each country of the United Kingdom has its own planning system that is responsible for town and country planning devolved to the Northern Ireland Assembly, the...
- A4, the designation for air force headquarters in the NATO continental staff system concerned with logistics
- In the United Kingdom, the A4 Air Logistics branch of the UK Joint Force Air Component HeadquartersJFACHQThe Joint Force Air Component Headquarters is the United Kingdom's deployable air command and control unit. The JFACHQ is run by the Royal Air Force with representation from the other services....
- In the United Kingdom, the A4 Air Logistics branch of the UK Joint Force Air Component Headquarters
- A4, the Alternating group acting on four elements
- A 4, see List of Swedish regiments for A4, a Swedish designation (4th Artillery Regiment) that has been used by the following units:
- Gotlands artilleriregemente (unknown–1892)
- Norrlands artilleriregementeNorrlands artilleriregementeNorrlands artilleriregemente , designation A 4, was a Swedish Army artillery regiment that traced its origins back to the 19th century. The regiment's soldiers were originally recruited from the provinces of Norrland...
(1893–1997)
- Subfamily A4, a Rhodopsin-like receptorsRhodopsin-like receptorsRhodopsin-like receptors are a family of proteins that comprise the largest group of G protein-coupled receptors.- Scope :G-protein-coupled receptors, GPCRs, constitute a vast protein family that encompasses a wide range of functions...
subfamily - A4 PodA4 PodA4 pod is the name given to one of the best known killer whale families in British Columbia.It currently consists of 3 matrilines and 14 members and is most famous for being the family of young Springer, who was the first orca to be successfully reintroduced to the wild after being handled by humans...
, a well-known family of killer whales living in British Columbia coastal waters