All articles starting with M
36,687 articles
Mater lectionis
Mater lectionis (plural matres lectionis, Hebrew em qeria), "mothers of reading": consonant letters aleph, he, waw, yod used as vowel markers in Hebrew, Aramaic, and Syriac abjads; Aramaic-invented, plene versus defective spellings, basis of later pointing systems.
Matera
Matera, in Basilicata, southern Italy, is famous for the Sassi, cave districts cut into the Murgia rock, inscribed by UNESCO in 1993 with the Park of the Rupestrian Churches, evacuated in the 1950s and repopulated from the 1980s.
Materfer
Materfer is an Argentine manufacturer of railway rolling stock founded by Fiat in 1958 in Ferreyra, Córdoba, known for railcars, subway cars, and the electric trains it exported to Chile.
Materia (Julia Holter album)
Materia is Julia Holter's seventh album, released August 21, 2026 on Domino as a seven-track companion to 2024's Something in the Room She Moves, reworking the song "Materia" into two new versions inspired by Hildegard von Bingen.
Material
A material is a substance, most often a solid, intended for certain applications. Its structure, set by processing, controls its properties, the organizing idea of materials science and engineering.
Material (band)
Material was an American experimental band formed in New York City in 1979 by Bill Laswell, Michael Beinhorn, and Fred Maher, fusing jazz, funk, punk, and hip-hop.
Material breach of treaty
A material breach of treaty is a breach serious enough to let another party terminate or suspend the treaty, codified in Article 60 of the 1969 Vienna Convention.
Material conditional
The material conditional, or logical conditional, is the truth-functional "if A then B" connective of classical logic, false only when A is true and B is false.
Material culture
Material culture is the tangible objects people make part of their lives and that carry meaning, such as clothing, tools, and buildings, and the academic field that studies them.
Material derivative
The material derivative, also called the convective or substantive derivative, is the rate of change of a quantity measured while following a moving fluid particle, written D/Dt.
Material Design
Material Design, originally called Quantum Paper, is Google's open-source design system providing guidelines, components, and tools for user interfaces across Android, the web, and Flutter, introduced in 2014.
Material dispersion
Material dispersion is the dependence of a material's refractive index on the wavelength of light, which limits how sharply pulses and images pass through glass.
Material failure theory
Material failure theory is the branch of solid mechanics that predicts when a material fails under stress, using criteria like Tresca, von Mises, and Tsai–Wu.
Material flow analysis
Material flow analysis (MFA) is a systematic assessment of material flows and stocks within a system defined in space and time, used in industrial ecology and waste management.
Material Girl
"Material Girl" is Madonna's 1985 dance-pop single from Like a Virgin, written by Peter Brown and Robert Rans, produced by Nile Rodgers; it peaked at No. 2 on the Hot 100 and gave Madonna her lasting nickname.
Material Impact
Material Impact is a Boston-based venture capital firm founded around 2016 by Carmichael Roberts and Adam Sharkawy that makes inception-stage investments in materials-science and deep-tech companies.
Material Lover
"Material Lover" is a 2026 song by London-born singer Sienna Spiro, written for the film The Devil Wears Prada 2 and released on May 1, 2026.
Material nonpublic information
Material nonpublic information (MNPI) is information about a company that a reasonable investor would consider important and that is not yet available to investors generally.
Material point method
The material point method (MPM) is a hybrid Eulerian–Lagrangian numerical technique introduced by Sulsky, Chen, and Schreyer in 1994, used to simulate large deformation of materials like snow, sand, and fluids, including Disney's Frozen.
Material properties of diamond
Diamond, the cubic sp³-bonded allotrope of carbon, is the hardest bulk material known and conducts heat better than any other, making it useful for cutting tools and heat spreaders.
Material requirements planning
Material requirements planning (MRP) is a production scheduling and inventory control method that calculates what materials are needed and when, formalized by Joseph Orlicky at IBM in the 1960s.
Material Technologies Corp
Material Technologies Corp, doing business as Material Bank, is a Boca Raton, Florida company whose marketplace lets architecture and design professionals search, sample, and specify materials.
Material UI
Material UI (MUI) is an open-source React component library implementing Google's Material Design with production-ready components. It began in 2014 and was rebranded from Material-UI in 2021.
Material-handling equipment
Material-handling equipment, or materials handling, is machinery for moving and storing material within a facility or site, spanning hand pallet trucks, conveyors, and automated storage systems.
Materialise
Materialise NV is a Belgian 3D printing company founded in 1990 by Fried Vancraen as a University of Leuven spin-off, providing additive manufacturing services and Magics build-preparation software, with about 2,000 employees and a Nasdaq listing.
Materialise Mimics
Materialise Mimics is medical image processing software developed by Materialise of Leuven, Belgium, launched in 1994, that converts DICOM scanner data into 3D anatomical models for surgical planning.
Materialism
Materialism, also called philosophical materialism or metaphysical materialism, is the doctrine that everything that exists is material or physically constituted, now usually discussed in philosophy as physicalism.
Materialists (film)
Materialists is a 2025 romantic comedy-drama written and directed by Celine Song for A24, starring Dakota Johnson, Chris Evans, and Pedro Pascal; a New York matchmaker torn between a wealthy suitor and her ex, grossing about $108 million worldwide.
Materiality (auditing)
Materiality in auditing is the threshold of misstatement that could influence users' economic decisions, governing which errors auditors pursue and whether the opinion is modified.
Materialize (database)
Materialize is a Rust-based streaming database founded in 2019 by Arjun Narayan and Frank McSherry, built on Timely and Differential Dataflow, PostgreSQL wire-compatible, with strict serializability and incrementally updated materialized views.