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tanning
(Encyclopedia) tanning, process by which skins and hides are converted into leather. Vegetable tanning, a method requiring more than a month even with modern machinery and tanning liquors, employs…chromium
(Encyclopedia) chromiumchromiumkrōˈmēəm [key] [Gr.,=color], metallic chemical element; symbol Cr; at. no. 24; at. wt. 51.9961; m.p. about 1,857℃; b.p. 2,672℃; sp. gr. about 7.2 at 20℃; valence +2, +3…Weirton
(Encyclopedia) Weirton, city (1990 pop. 22,124), Brooke and Hancock counties, NW W.Va., in the industrial Northern Panhandle, on the Ohio River; settled 1790s, inc. 1947. Its industries include coal…Mugodzhar Hills
(Encyclopedia) Mugodzhar HillsMugodzhar Hillsm&oomacr;gəjärˈ [key], range, c.275 mi (440 km) long, E Kazakhstan. The southern spur of the Urals, it forms the divide between the Caspian and the…California
(Encyclopedia) CE5 CaliforniaCaliforniakălˌĭfôrˈnyə [key], most populous state in the United States, located in the Far West; bordered by Oregon (N), Nevada and, across the Colorado River, Arizona…Mersin
(Encyclopedia) MersinMersinmĕrsĭnˈ [key], formerly IçelIçelēchĕlˈ [key], city (1990 pop. 420,750), capital of Içel prov., S Turkey, on the Mediterranean Sea. A rail terminus and modern seaport, it…Lufkin
(Encyclopedia) Lufkin, city (1990 pop. 30,206), seat of Angelina co., E Tex.; inc. 1890. Situated in the deep pine woods, it is the core of a region of forest industries with many sawmills and the…morocco, type of leather
(Encyclopedia) morocco, goatskin leather, dyed on the grain side and boarded by hand or machine to bring up the grain in a bird's-eye effect. It probably originated with the Arabs in North Africa as…pigment
(Encyclopedia) pigment, substance that imparts color to other materials. In paint, the pigment is a powdered substance which, when mixed in the liquid vehicle, imparts color to a painted surface. The…sodium thiosulfate
(Encyclopedia) sodium thiosulfate, Na2S2O3, colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3·5H2O, an efflorescent, monoclinic crystalline substance also called…Trending
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