/mat/, adj., n., v., matted, matting.
1. having a dull or lusterless surface: matte paint; a matte complexion; a photograph with a matte finish.
2. a dull or dead surface, often slightly roughened, as on metals, paint, paper, or glass.
3. a tool for producing such a surface.
4. Metall. an unfinished metallic product of the smelting of certain sulfide ores, esp. those of copper.
5. Motion Pictures. See matte shot.
6. to finish with a matte surface.
Also, mat, matt.
[1640-50; < F mat (masc.), matte (fem.), OF < LL mattus moist, soft, weak, perh. < *maditus, deriv. of L madere to be wet]
/mat/, n. Mining.
a mass of timber caved beneath overburden so as to cushion the fall of the overburden and separate it from mineral to be extracted beneath.
[ < G; akin to MAT1]

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      crude mixture of molten sulfides formed as an intermediate product of the smelting of sulfide ores of metals, especially copper, nickel, and lead. Instead of being smelted directly to metal, copper ores are usually smelted to matte, preferably containing 40–45 percent copper along with iron and sulfur, which is then treated by converting in a Bessemer-type converter. Air is blown into the molten matte, oxidizing the sulfur to sulfur dioxide and the iron to oxide that combines with a silica flux to form slag, leaving the copper in the metallic state. Smelting of nickel sulfide ores yields a matte in which nickel and copper make up about 15 percent, iron about 50 percent, and sulfur the rest; the iron is removed in a converting furnace, and the sulfides of copper and nickel are separated before being reduced to the metals. Smelting of lead sulfide ores produces a liquid layer of copper sulfide matte that can be decanted, along with slag and speiss, from the lead bullion.

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Universalium. 2010.

Look at other dictionaries:

  • matte — matte …   Dictionnaire des rimes

  • matte — [ mat ] n. f. • 1627; o. i., p. ê. subst. du fém. de l adj. mat « compact » ♦ Techn. Mélange de sulfures de fer et de cuivre, provenant de la première fusion d un minerai sulfuré. ⊗ HOM. Mat, maths. ● matte nom féminin (moyen français matte, lait …   Encyclopédie Universelle

  • Matte — may refer to: In film: Matte (filmmaking), filmmaking and video production technology Matte painting, a process of creating sets used in film and video Matte box, a camera accessory for controlling lens glare Open matte, a filming technique that… …   Wikipedia

  • matte — 1. (ma t ) s. f. 1°   Terme de métallurgie. Substance métallique qui n a subi qu une première fonte, et qui n est pas encore dans un état suffisant de pureté. •   Dans le bas Hartz, les mines de cuivre contiennent du plomb et beaucoup de pyrites… …   Dictionnaire de la Langue Française d'Émile Littré

  • Matte — (m[a^]t), n. [F. matte; cf. F. mat, masc., matte, fem., faint, dull, dim; said of metals. See {Mate} checkmate.] 1. (Metallurgy) A partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal… …   The Collaborative International Dictionary of English

  • matte — (m[a^]t), a. Having a dull, lusterless surface finish; opposed to {glossy} or polished; as, a matte photograph; a proof coin with matte figures on a polished field. [PJC] …   The Collaborative International Dictionary of English

  • Matte — ¹Matte a) Auflage, Unterlage, Vorleger. b) Turnmatte. ²Matte Bergwiese; (österr.): Mahd. * * * 1Matte,die:1.⇨Fußabtreter–2.aufderM.stehen:a)⇨bereithalten(II)–b)⇨erscheinen …   Das Wörterbuch der Synonyme

  • matte — matte; semi·matte; …   English syllables

  • Matte — Matte. См. Штейн. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Matte [1] — Matte, 1) so v.w. Decke; bes. 2) geflochtene Arbeit aus Schilf, Binsen, Strohhalmen, Rohr, Bast u. dgl.; zum Einpacken von Waaren, zu Körben u. Behältnissen für trockene Sachen, zu Fußtapeten etc. 3) (Seew.), ein Geflechte von Schiemannsgarn, das …   Pierer's Universal-Lexikon

  • Matte [2] — Matte (spanische M.), eine ehemalige spanische, viereckige Silbermünze = 1 Thlr. 3 Gr …   Pierer's Universal-Lexikon

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