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pressure-treated wood

(Encyclopedia)pressure-treated wood, wood that has had a liquid preservative forced into it in order to protect against deterioration due to rot or insect attack. The most commonly used preservatives are chromated ...

carbide

(Encyclopedia)carbide, any one of a group of compounds that contain carbon and one other element that is either a metal, boron, or silicon. Generally, a carbide is prepared by heating a metal, metal oxide, or metal...

carbon tetrachloride

(Encyclopedia)carbon tetrachloride tĕˌtrəklôrˌəmĕthˈān [key], CCl4, colorless, poisonous, liquid organic compound that boils at 76.8℃. It is toxic when absorbed through the skin or when inhaled. It react...

Scheele, Karl Wilhelm

(Encyclopedia)Scheele, Karl Wilhelm kärl vĭlˈhĕlm shāˈlə [key], 1742–86, Swedish chemist, b. Stralsund. He is known as the discoverer of many chemical substances. He was a pharmacist in Stockholm, in Uppsa...

Murray, cities, United States

(Encyclopedia)Murray. 1 City (1990 pop. 14,439), seat of Calloway co., SW Ky., near the Tenn. line; inc. 1844. There is light manufacturing. Tobacco and grain are grown, livestock and poultry are raised, and there ...

Salado, Río

(Encyclopedia)Salado, Río rēˈō säläˈᵺō [key] [Sp.,=salty river], name of several South American rivers, including more than 10 in Argentina. The most important is the Río Salado del Norte (c.1,250 mi/2,0...

Sandusky, city, United States

(Encyclopedia)Sandusky səndŭsˈkē, săn– [key], industrial city (1990 pop. 26,764), seat of Erie co., N central Ohio, a port of entry on Sandusky Bay of Lake Erie; inc. 1824. Its natural harbor has coal-loadin...

Ré, island, France

(Encyclopedia)Ré rā [key], island (1991 pop. 13,973), 33 sq mi (85 sq km), Charente-Maritime dept., off La Rochelle, W France, in the Bay of Biscay. The island is largely agricultural; it has oyster beds, some fi...

glaze, in pottery

(Encyclopedia)glaze, translucent layer that coats pottery to give the surface a finish or afford a ground for decorative painting. Glazes—transparent, white, or colored—are fired on the clay. Of the various art...

Estremadura, region, Portugal

(Encyclopedia)Estremadura əshtrəmədo͞oˈrə [key], region, W Portugal, formerly a province, now divided between the provinces of Estremadura and Ribatejo, with a small part in Beira Litoral. Estremadura provinc...