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carbonate

(Encyclopedia)carbonate kärˈbənātˌ, –nət [key], chemical compound containing the carbonate radical or ion, CO3−2. Most familiar carbonates are salts that are formed by reacting an inorganic base (e.g., a ...

loam

(Encyclopedia)loam, soil composed of sand, silt, clay, and organic matter in evenly mixed particles of various sizes. More fertile than sandy soils, loam is not stiff and tenacious like clay soils. Its porosity all...

Louis, Morris

(Encyclopedia)Louis, Morris, 1912–62, American painter, b. Baltimore. A practitioner of color-field painting, Louis was noted for soaking poured paint through unsized and often unstretched canvas. Prior to 1960 h...

mechanism

(Encyclopedia)mechanism, philosophical theory about the nature of organic systems, holding that organisms are machines in the sense that they are material systems. Mechanism seeks to explain biological processes, i...

ethyl

(Encyclopedia)ethyl ĕthˈəl [key], CH3CH2, organic free radical or alkyl group derived from ethane by removing one hydrogen atom. ...

Pucci, Emilio

(Encyclopedia)Pucci, Emilio (Marchese Emilio Pucci di Barsento) po͞oˈchē [key], 1914–92, Italian fashion designer. After establishing showrooms in Florence, Capri, and Rome, he began his signature look with el...

Perkin, Sir William Henry

(Encyclopedia)Perkin, Sir William Henry, 1838–1907, English chemist. In 1856 he discovered the first aniline dye (aniline purple, known as mauve and mauveine); by founding a factory to make it, Perkin established...

benzine

(Encyclopedia)benzine bĕnˈzēn, bĕnzēnˈ [key], colorless, highly flammable liquid. It is used as a cleaning agent because it is a solvent for organic substances such as fats, oils, and resins and is also used ...

calcium oxide

(Encyclopedia)calcium oxide, chemical compound, CaO, a colorless, cubic crystalline or white amorphous substance. It is also called lime, quicklime, or caustic lime, but commercial lime often contains impurities, e...

lewisite

(Encyclopedia)lewisite lo͞oˈəsītˌ [key], liquid chemical compound used as a poison gas. Like mustard gas and nitrogen mustard, it is a blistering agent; when inhaled, it is a powerful respiratory irritant. The...