M4
Encyclopedia
Computers
- m4 (computer language)M4 (computer language)m4 is a general purpose macro processor designed by Brian Kernighan and Dennis Ritchie. m4 is an extension of an earlier macro processor m3, written by Ritchie for the AP-3 minicomputer.-Use:...
, a macro processing language - GNU m4GNU m4GNU m4 is the GNU version of the m4 macro preprocessor. It is designed to avoid many kinds of limits found in traditional m4s: limits like maximum line lengths, maximum size of a macro, number of macros, etc...
, the GNU version of the m4 language - M4 Solutions, a software suite displaying telecommunications data in a geographic view, developed by Mapcom SystemsMapcom SystemsMapcom Systems is the software developer of M4 Solutions - a map-based Geographical Operations System software suite designed to display and allow access to the data of telecommunications providers in a geographic view...
Firearms and military equipment
- Myasishchev M-4Myasishchev M-4The Myasishchev M-4 Molot , USAF/DoD reporting name "Type 37", NATO reporting name 'Bison'.) is a four-engined strategic bomber designed by Vladimir Myasishchev and manufactured by the Soviet Union in the 1950s to provide a bomber capable of attacking targets in North America...
, a Soviet strategic bomber - Spectre M4Spectre M4The Spectre is an Italian submachine gun that was produced by the SITES factory in Turin. It was designed by Roberto Teppa and Claudio Gritti in the mid-1980s. Production in Italy ceased in the year 1997, with the closure of SITES, but proceeded in very small numbers in Switzerland through Greco...
, a submachine gun - M4 SLBMM4 SLBMThe M4 was a French Submarine Launched Ballistic Missile deployed on the nuclear Le Redoutable class submarines They entered service on the 1 May 1985...
, a French submarine-launched ballistic missile - Benelli M4 Super 90Benelli M4 Super 90The Benelli M4 Super 90 is an Italian semi-automatic shotgun manufactured by Benelli Armi S.P.A.-History:On May 4, 1998, the U.S. Army Armaments Research, Development and Engineering Center at Picatinny Arsenal, NJ issued Solicitation #DAAE30-98-R-0401, requesting submissions for a new 12 gauge,...
, a combat shotgun - HMS Carlskrona (M04), a 1980 Swedish Navy minelayer
- M04 Camouflage pattern used by Finnish Defence Forces
- M4 cannonM4 cannonThe 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm autocannon designed by John Browning and used in the Bell P-39 Airacobra and P-63 Kingcobra fighters, as well as experimentally on other designs. It provided interceptors with a weapon that could shoot down any...
, the 37 mm Automatic Gun - M4 carbineM4 carbineThe M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...
, a military carbine - M4 (cipher), a variant of the Enigma machine
- M4 flame fuel thickening compoundM4 flame fuel thickening compoundM4 flame fuel thickening compound is a nonhygroscopic thickener, adi-acid aluminum soap of isooctanoic acides derived from isooctyl alcohol or isooctyl aldehyd, which are obtained from the oxidization of petroleum. M4 is used in fire bombs and incendiary weapons....
, a substance used in fire bombs and incendiary weapons - M4 ShermanM4 ShermanThe M4 Sherman, formally Medium Tank, M4, was the primary tank used by the United States during World War II. Thousands were also distributed to the Allies, including the British Commonwealth and Soviet armies, via lend-lease...
, the primary tank used by the Americans in World War II - M4 TractorM4 Tractor-Design and development:The M4 was based on the chassis and drive train of the obsolescent M2 Light Tank. This common practice of re-using old vehicles simplified design, allowed for easy production, and made maintenance in the field easier....
, an artillery tractor used by the US Army from 1943 - M2/M4 Selectable Light-weight Attack Munition (SLAM), a land mine
- M4 Survival RifleM4 Survival RifleThe M4 Survival Rifle was developed during World War II as part of the survival gear stored under the seat of military aircraft, to give downed aircrew a survival weapon for foraging wild game for food.- History :...
, a foldable rifle issued to United States military pilots in World War II
Science
- ATC code M04ATC code M04-M04AA Preparations inhibiting uric acid production:-M04AA Preparations inhibiting uric acid production:-M04AA Preparations inhibiting uric acid production::M04AA01 Allopurinol:M04AA02 Tisopurine:M04AA03 Febuxostat:M04AA51 Allopurinol, combinations...
Antigout preparations, a subgroup of the Anatomical Therapeutic Chemical Classification System - British NVC community M4British NVC community M4NVC community M4 is one of the mire communities in the British National Vegetation Classification system.It is a localised community of northern and western Britain...
, a type of mire plant community in the British National Vegetation Classification system - Muscarinic acetylcholine receptor M4Muscarinic acetylcholine receptor M4The muscarinic acetylcholine receptor M4, also known as the cholinergic receptor, muscarinic 4 , is a protein that, in humans, is encoded by the CHRM4 gene.-Function:...
, a human gene - Messier 4Messier 4Messier 4 or M4 is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1746 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.-Visibility:M4 is conspicuous in even the smallest of...
(M4), a globular cluster in the constellation Scorpius
Transportation
- M4 layout, an automotive design that places the engine in the middle of the vehicle and drives all four wheels
- M4 VacamaticVacamaticThe 1941 M4 Vacamatic transmission by Chrysler was, historically, the first semi-automatic transmission which was marketed by a major manufacturer. It was an attempt to compete against rival's automatic transmissions, though it still had a clutch, primarily to change range. In normal driving, the...
, a 1941 semi-automatic transmission made by Chrysler - Covington Municipal Airport (Tennessee)Covington Municipal Airport (Tennessee)Covington Municipal Airport is a city-owned public-use airport located three miles northeast of the central business district of Covington, a city in Tipton County, Tennessee, United States.- Facilities and aircraft :...
FAA LID
Bus
- M4 (New York City bus), a route in New York City operating on Madison and Fifth Avenues
Rail
- Line 4 (Budapest Metro)Line 4 (Budapest Metro)The Metro 4 , currently under construction, is the fourth line of Budapest Metro, and is expected to open in 2014 or 2015....
, the fourth line of Budapest Metro, Hungary - Bucharest Metro Line M4, Romania
- M4, a type of subway car used on the Market–Frankford Line in Philadelphia, Pennsylvania
- M4 (İstanbul Metro)M4 (İstanbul Metro)M4 is a rapid transit line of the İstanbul Metro, currently under construction in İstanbul, with opening planned to be on December 31, 2011. The M4 will be the only rapid transit line on the Asian side of İstanbul...
, a subway line under construction in İstanbul, Turkey
Passenger aircraft
- Maule M-4, a 1960 American four-seat cabin monoplane
- Miles M.4 Merlin, a 1930s British five-seat cabin monoplane
Other uses
- M4 money supply, the total amount of money in bank accounts and in circulation in the United Kingdom
- M4 (EP)M4 (EP)M4 is an EP recorded by Canadian Indie Rock band Faunts in 2007. The EP was largely unknown until M4, Pt. II was played over the credits of the 2007 video game Mass Effect.- Track listing :* 1 - M4, Pt. II * 2 - Sleepwalker...
, by Canadian band Faunts - M4 ISO metric screw threadISO metric screw threadThe ISO metric screw threads are the world-wide most commonly used type of general-purpose screw thread. They were one of the first international standards agreed when the International Organization for Standardization was set up in 1947.-Basic profile:...
- Leica M4Leica M4- Leica M4 :The M4, introduced in 1967, is the direct successor of the M3 and M2, featuring framelines for 35mm, 50mm, 90mm and 135mm lenses in a 0.72 magnification viewfinder...
, a 1967 35 mm camera