All articles starting with M
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Mass Effect 2
Mass Effect 2 is BioWare's 2010 sci-fi action RPG, the trilogy's second chapter, directed by Casey Hudson. Released January 26, 2010 on Xbox 360 and PC; Metacritic 96, 120+ awards, team-building story ending in a suicide mission.
Mass Effect 3
Mass Effect 3 (2012), BioWare's action RPG concluding the Mass Effect trilogy, has Commander Shepard unite the galaxy against the Reapers; its three-choice ending sparked the Retake Mass Effect 3 controversy and the free Extended Cut DLC.
Mass Effect Legendary Edition
Mass Effect Legendary Edition is a 2021 remastered collection of the Mass Effect trilogy, released by BioWare and Electronic Arts for Xbox One, PlayStation 4, and PC.
Mass Effect: Andromeda
Mass Effect: Andromeda is a 2017 BioWare/EA action RPG, the fourth Mass Effect game, following the Ryder Pathfinders to the Andromeda galaxy; it received mixed reviews (Metacritic ~70) and no story DLC.
Mass flow rate
Mass flow rate is the mass of fluid passing a conduit cross-section per unit time, written ṁ and measured in kilograms per second in SI units.
Mass flow sensor
A mass flow sensor, also called a mass flow meter or MAF sensor, measures the rate of fluid mass flow directly, without separate pressure or temperature measurements.
Mass fraction (chemistry)
Mass fraction, also known as mass percent or weight percent, is the mass of a constituent of a mixture divided by the total mass of the mixture.
Mass grave
Mass grave: a burial site holding multiple human remains, from epidemics, battles, or concealed crimes. Undefined in international law; defined by the Bournemouth Protocol; investigated through forensic archaeology and protected under IHL.
Mass Group Holding
Mass Group Holding (مجموعة ماس القابضة) is a private Jordanian industrial group, founded in 2006 by Ahmed Ismail Saleh, that builds power stations in Iraq.
Mass Hysteria (group)
Mass Hysteria is a French metal band from Paris formed in 1993, known for singing almost exclusively in French and mixing industrial rhythms with heavy metal guitar.
Mass in B minor
The Mass in B minor (H-Moll-Messe), BWV 232, is Bach's setting of the complete Latin Mass Ordinary, assembled from 1733 and largely reworking his earlier music.
Mass in special relativity
Mass in special relativity, sometimes called relativistic mass in older texts, is the invariant quantity every observer agrees on, related to energy and momentum by E² = (pc)² + (mc²)².
Mass in the Catholic Church
The Mass, also called Holy Mass, is the Eucharistic celebration of the Catholic Church, in which bread and wine become the Body and Blood of Christ.
Mass inflation
Mass inflation is an instability inside realistic black holes, named by Eric Poisson and Werner Israel in 1989, in which the internal mass parameter grows without classical bound near the Cauchy horizon.
Mass Jathara
Mass Jathara (మాస్ జాతర), a 2025 Telugu action comedy, is debutant director Bhanu Bhogavarapu's film starring Ravi Teja as railway cop Lakshman Bheri fighting drug lord Shivudu (Naveen Chandra), with Sreeleela; released 31 October 2025, it grossed ₹21.79 crore worldwide and streams on Netflix since 28 November 2025.
Mass killings under communist regimes
Mass killings under communist regimes: twentieth-century mass deaths attributed to communist states, chiefly the USSR, China, and Cambodia. Estimates range from 21–70 million to 110 million; the Black Book of Communism's 85–100 million figure is contested on methodological grounds.
Mass media
Mass media: institutional and technological forms (print, broadcast, film, digital) distributing messages to large dispersed audiences. Known for gatekeeping, agenda-setting effects, and a 2020s shift toward social media, video networks, and AI chatbots as news sources.
Mass media in New Zealand
Mass media in New Zealand covers newspapers, radio, television and digital news. Television began 1 June 1960 in Auckland; TV3 (1989) and Sky TV (1990) ended the TVNZ monopoly; NZ On Air funds local content; the BSA is being disestablished in 2026.
Mass media in the United Kingdom
Mass media in the United Kingdom: BBC, ITV, Channel 4, S4C public service broadcasters, national press, and Ofcom regulation under the Media Act 2024; digital transition, low European trust rankings, and the 2026 media green paper.
Mass murder
Mass murder is the killing of many people in one event, criminologically four or more victims excluding the perpetrator, also called mass killing. Covers family, felony, public, and atrocity-scale forms, US data, motives, and distinction from genocide.
Mass number
The mass number, also called the nucleon number, is the total count of protons and neutrons in an atomic nucleus, written as a superscript before the element symbol.
Mass photometry
Mass photometry, introduced in 2018 as interferometric scattering mass spectrometry (iSCAMS), is a label-free optical method that measures single biomolecule masses in solution in minutes.
Mass production
Mass production, also called flow production, is the manufacture of goods in high volume using specialization, division of labor, and standardization of parts to cut unit costs.
Mass psychogenic illness
Mass psychogenic illness (MPI), also called mass hysteria or epidemic hysteria, is the rapid social spread of real physical symptoms through a group with no identifiable organic cause, typically in schools and workplaces, spreading by suggestion and line-of-sight contact.
Mass racial violence in the United States
Mass racial violence in the United States, also known as race riots in the United States, covers white mob attacks on Black Americans from Reconstruction through the twentieth century.
Mass Rapid Transit (Singapore)
The Mass Rapid Transit (MRT), also known as the Singapore metro, is the city-state's urban rail system, opened in 1987 and carrying over three million passengers daily.
Mass Rapid Transit Master Plan in Bangkok Metropolitan Region
The Mass Rapid Transit Master Plan in Bangkok Metropolitan Region, known as M-MAP2, is Bangkok's second long-term rail master plan, drafted by Thailand's Department of Rail Transport with JICA.
Mass ratio
A mass ratio is the quotient of the mass of one constituent of a system by the mass of another, a dimensionless quantity used across chemistry and rocketry.
Mass rearing of parasitoid wasps
Mass rearing of parasitoid wasps is the industrial-scale production of pest-killing wasps for release in biological control, with Trichogramma egg parasitoids used in more than 30 countries.
Mass Screening
Mass screening (population screening): large-scale testing of asymptomatic whole populations for disease, defined by WHO and the 1968 Wilson-Jungner principles; distinct from selective and opportunistic screening, with benefits limited by overdiagnosis and false positives.