All articles starting with M
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Maine's 2nd congressional district
Maine's 2nd congressional district is one of the state's two districts in the United States House of Representatives. It encompasses much of northern and eastern Maine, including Bangor and Lewiston. At more.
Mainframe computer
A mainframe computer, or mainframe, is a large, high-reliability computer serving as an organization's central data-processing system, still widely used in banking, insurance, and government.
Mainframe Studios
Mainframe Studios is a Vancouver, BC computer animation and IP development studio founded in 1993 as Mainframe Entertainment, creator of ReBoot, the first fully CG TV series; also known as Rainmaker Entertainment, owned by Kartoon Studios via WOW! Unlimited, distinct from a Des Moines nonprofit of the same name.
Mainhardt
Mainhardt is a municipality in the district of Schwäbisch Hall, Baden-Württemberg, Germany, lying in the Mainhardter Wald on the Roman frontier, where a cohort fort of the Cohors I Asturum equitata stood until about 260 AD.
Mainland and Hong Kong Closer Economic Partnership Arrangement
The Mainland and Hong Kong Closer Economic Partnership Arrangement (CEPA) is a free trade agreement signed in 2003 between China and Hong Kong, covering goods, services, and investment facilitation.
Mainland Southeast Asia
Mainland Southeast Asia is the continental portion of Southeast Asia, comprising Myanmar, Thailand, Laos, Cambodia, and Vietnam, defined by its great rivers (Mekong, Irrawaddy, Salween, Chao Phraya, Red), tropical monsoon climate, and distinct mainland-versus-maritime historical divide.
Mainline Protestant
Mainline Protestants are members of the historic, establishment-oriented Protestant denominations of the United States, including the United Methodist Church, Evangelical Lutheran Church in America, Presbyterian Church (U.S.A.), Episcopal Church, and United Church of Christ.
Mains electricity
Mains electricity, also called mains power or household power, is the general-purpose alternating-current supply delivered by public utility networks to buildings through wall outlets, as distinct from battery power.
Mains electricity by country
Mains electricity by country covers the domestic voltage, frequency, and plug standards each country uses, with most supplying 220 to 240 volts and about 15 plug types worldwide.
Mains Rigg signal tower
Mains Rigg signal tower: Roman signal station at Upper Denton, Cumberland, on the Stanegate between Nether Denton and Throp forts; scheduled monument 1013605, stone tower 6.5 m square, excavated 1928 and 1971-2.
Mainsail Partners
Mainsail Partners is a private equity firm founded in 2003 by Gavin Turner and Jason Payne, investing in bootstrapped B2B software companies from San Francisco and Austin.
Mainspring
A mainspring, also called a motor spring or watchspring, is a coiled steel spring that stores energy to drive the gear train of a mechanical clock or watch.
Mainspring Energy
Mainspring Energy, formerly EtaGen and Affinity Power, is a Menlo Park, California clean-power company founded in 2010 that builds fuel-flexible linear generators for onsite electricity production.
Mainstay Medical
Mainstay Medical is a Dublin-based Irish medical device company selling ReActiv8, an implantable neurostimulation system for disabling chronic low back pain, approved by the FDA in 2020.
Mainstream (film)
Mainstream is Gia Coppola's 2020 satirical drama, premiered at Venice Orizzonti and released in the US May 7, 2021, starring Andrew Garfield and Maya Hawke in a cautionary tale about YouTube fame; it scored 42% on Rotten Tomatoes and 36 on Metacritic.
Mainstream (political organisation)
Mainstream (Mainstream Labour) is a soft-left faction within the UK Labour Party, founded in 2025. It campaigns for a democratic socialist program and merged with Open Labour in 2026.
Mainstream media
Mainstream media are the large, professionally staffed news organizations reaching mass audiences. Also called legacy or traditional media. Distinguished by scale, professional norms, and advertising-based economics; facing falling trust (37% global) and platform-driven audience shifts.
Mainstream Rock (chart)
Billboard's Mainstream Rock (chart), now Mainstream Rock Airplay, weekly ranks the most-played songs on U.S. mainstream rock radio via Mediabase detections and Luminate data; begun March 21, 1981, all-time leader Shinedown.
Maintainability index
The maintainability index is a composite software metric combining size, complexity, and documentation measures into a single number, proposed by Oman and Hagemeister in 1992.
Maintainer (software)
A maintainer in software is a person responsible for a piece of software or subsystem, reviewing and accepting changes, deciding releases, and keeping the code and community healthy.
MaintainX
MaintainX Inc. is a San Francisco software company founded in 2018 that makes a mobile-first maintenance and asset management platform for frontline industrial workers, serving over 14,000 organizations.
Maintenance chemotherapy
Maintenance chemotherapy is a cancer strategy of continuing lower-dose treatment after remission to prolong it, distinct from consolidation therapy; it is standard in pediatric acute lymphoblastic leukemia but unproven in ovarian cancer.
Maintenance pending suit
Maintenance pending suit is a court order requiring one spouse to make periodical payments to the other while divorce, nullity, or judicial separation proceedings are still pending.
Maintenance Required (film)
Maintenance Required is a 2025 Prime Video romantic comedy directed by Lacey Uhlemeyer, starring Madelaine Petsch and Jacob Scipio as rival auto-shop owners who fall for each other anonymously online, closely retelling You've Got Mail.
Mainz
Mainz (Magenza), capital of Rhineland-Palatinate on the Rhine with about 224,000 residents; Roman Mogontiacum, ShUM Jewish heritage, Gutenberg's printing city, GDP 24.6 billion euros.
Mainz Cathedral
Mainz Cathedral, known in German as Mainzer Dom, is the Roman Catholic cathedral of Mainz, Germany, founded by Archbishop Willigis in 975 and the site of seven royal coronations.
Maio Biosphere Reserve
Maio Biosphere Reserve: UNESCO Man and the Biosphere site designated 2020 covering all of Maio Island and its marine zone in Cabo Verde (73,972 ha, 6,980 people), with endemic turtles, sharks, lizards, and salt-producing communities.
Maionia, Lydia
Maionia, also spelled Maeonia, was an ancient city of Lydia in the upper Hermos valley in western Asia Minor, at modern Gökçeören, Turkey, which attained city status under Augustus and minted coins from Nero onward.
Maiora Renewables
Maiora Renewables is the name of two Cayman Islands private equity funds, Maiora Renewables Fund I and Fund II, managed from Singapore, which invested in solar power in Japan and Taiwan.
Maipo
Maipo, a 5,323 m Chile-Argentina border stratovolcano southeast of Santiago, partially fills the 450,000-year-old Diamante caldera; last confirmed eruption 1912, no fumaroles, high Argentine volcanic risk rank.