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MacArtney
MacArtney, formally The MacArtney Underwater Technology Group, is a Danish family-owned supplier of underwater technology, founded in 1978 and known for SubConn connectors and FOCUS ROTV systems.
Macau International Airport (澳门国际机场)
Macau International Airport (澳门国际机场) is the international airport of Macao, China, at the eastern end of Taipa island and on adjoining reclaimed land, open 24 hours since November 1995.
MacBook
The MacBook is Apple's family of laptop computers running macOS, introduced in 2006 and comprising the budget MacBook Neo, the thin MacBook Air, and the performance MacBook Pro.
MacBook Air
The MacBook Air is a line of thin, fanless consumer laptops made by Apple, introduced in January 2008 and now sold in 13-inch and 15-inch models with Apple silicon.
MacBook Neo
The MacBook Neo is Apple's most affordable MacBook, introduced in March 2026 at $599, built on the iPhone 16 Pro's A18 Pro chip with a 13-inch Liquid Retina display.
MacBook Pro
MacBook Pro is Apple's line of high-performance laptops for professional workloads like video editing and software development, introduced in 2006 and now powered by M-series chips.
Macchi M.C.72
The Macchi M.C.72, also known as the Macchi-Castoldi MC-72, is an Italian racing seaplane designed by Mario Castoldi for the 1931 Schneider Trophy, which never raced.
MacCready Gossamer Albatross
The MacCready Gossamer Albatross is a human-powered aircraft designed by Paul MacCready's AeroVironment team, which flew the English Channel in 1979, piloted by cyclist Bryan Allen, winning the Kremer Prize.
MacCready Gossamer Condor
The MacCready Gossamer Condor, also called the Gossamer Condor, was a human-powered aircraft designed by Paul MacCready that completed the first sustained figure-eight flight in 1977, winning the Kremer Prize.
MacCready Gossamer Penguin
The MacCready Gossamer Penguin was a three-quarter-scale solar-powered aircraft built by Paul MacCready's AeroVironment team, which flew the first sustained flight on direct solar power in 1980.
MacDill Air Force Base
MacDill Air Force Base, Tampa, Florida: Air Mobility Command base activated 1941, home of the 6th Air Refueling Wing's KC-135 tankers and headquarters of U.S. Central Command and U.S. Special Operations Command.
Mace (bludgeon)
A mace is a crushing weapon with a heavy head on a stout shaft, used from ancient times and surviving today as a symbol of parliamentary authority.
Mace (spray)
Mace, originally Chemical Mace, is a brand of self-defense spray introduced in 1965 as CN tear gas and sold today as pepper spray by Mace Security International.
Macedon Gas Field
The Macedon Gas Field is an offshore natural gas field on Australia's North West Shelf, discovered in 1992, that has supplied only the Western Australian domestic market since 2013.
Mach (kernel)
Mach is an operating system kernel developed at Carnegie Mellon University beginning in 1985, later restructured as a microkernel built around interprocess communication; its concepts survive in Apple's macOS and iOS kernels and in GNU Mach.
Mach Loop
The Mach Loop is an informal name for a roughly circular low-level flying route through mid-Wales valleys, used by RAF, Royal Navy, and allied aircraft for terrain-flying training.
Mach Natural Resources LP
Mach Natural Resources LP is an Oklahoma City-based oil and gas company operating in the Anadarko, Permian, and San Juan Basins, listed on the NYSE as MNR.
Mach-O
Mach-O, short for Mach object, is a file format for executables, shared libraries, and core dumps, serving as the native executable format on macOS, iOS, and other Apple operating systems.
MACH-TB 2.0
MACH-TB 2.0 is the second phase of a US Department of Defense hypersonic flight test bed program, managed by the Test Resource Management Center and aiming for 50 flight tests annually.
Machar Oil and Gas Field
Machar is an oil field in the UK Central North Sea, 150 miles northeast of Aberdeen, discovered in 1972 and developed by BP within the Eastern Trough Area Project.
Machete
A machete, sometimes spelled matchet, is a large knife with a wide blade used to cut vegetation and, in parts of Latin America and Africa, as a weapon.
Machinability
Machinability is the ease with which a material can be cut to a desired surface finish; it is judged by tool wear, cutting forces, chips, and surface integrity.
Machine
A machine is an assemblage of parts that transmits forces, motion, and energy to transform power into useful work, ranging from the six simple machines to automated production lines.
Machine code
Machine code, also called machine language, is the set of binary instructions a computer's processor executes directly, making it the only form of program a CPU can run without translation.
Machine de Marly
The Machine de Marly, also known as the Marly Machine, was a giant hydraulic pumping installation on the Seine built in 1681–1684 to feed the fountains of Versailles.
Machine gun
A machine gun is a repeating firearm that loads, fires, and ejects cartridges automatically, first built by Hiram Maxim in 1884 and central to twentieth-century warfare.
Machine learning
Machine learning is the branch of computer science concerned with building computers that improve automatically through experience, drawing on statistics and spanning supervised, unsupervised, and reinforcement learning.
Machine Learning Algorithms
Machine learning algorithms: procedures by which computer systems learn from data to improve accuracy, grouped into supervised, unsupervised, and reinforcement learning; examples include regression, random forests, SVMs, neural networks, and XGBoost.
Machine learning engineer
Machine learning engineer (ML engineer): software professional who designs, trains, deploys, and maintains machine learning models in production, distinct from data scientist and AI engineer; role emerged pre-2011, defined in frameworks like UK GDD, with median US salary near $165,000.
Machine learning for Earth observation
Machine learning for Earth observation is the use of deep neural networks to turn satellite and airborne imagery into products like land cover maps and flood extents.