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carding
In yarn production, a process of separating individual fibers and causing many of them to lie parallel, and also removing most of the remaining impurities. Cotton, wool, waste silk, and man-made staple are subjected to carding. Carding produces a thin sheet of uniform thickness that is then condensed to form a thick, continuous, untwisted strand called sliver. When very fine yarns are desired, carding is followed by combing, a process that removes short fibers, leaving a sliver composed entirely of long fibers, all laid parallel, and both smoother and more lustrous than uncombed types. Carded and combed sliver is then spun.


karting
Driving and racing miniature, skeleton-frame, rear-engine automobiles called karts or GoKarts. The sport originated in the U.S. in the 1950s after the first kart had been assembled from unwanted lawn-mower parts. It thereafter developed into an international sport in Europe. Speeds of 100 mph (160 kph) are not uncommon.


parting
In metallurgy, the separation of gold and silver by chemical or electrochemical means. Gold and silver are often extracted together from the same ores or recovered as by-products from the extraction of other metals. A solid mixture of the two, known as bullion or doré , can be parted by boiling in nitric acid. The silver is dissolved as silver nitrate, leaving a gold residue that is filtered off and washed; silver is precipitated out of solution by adding ferrous sulfate. This is the traditional method used in assaying the content of gold and silver samples.


walking
In track and field, a form of racing in which the competitor's advancing foot must touch the ground before the rear foot leaves it. Walking as a sport dates from the later 19th cent. Walking races of 10 mi and 3,500 m were added to the men's Olympic program in 1908, but since 1956 the Olympic distances have been 20 km and 50 km. A women's 10-km walk was introduced in 1992.


waxwing
Any of three species (family Bombycillidae) of elegant-looking songbirds named for shiny red beads on the tips of the secondary wing feathers. All species are gray-brown and have a tapering crest. The common, or Bohemian, waxwing (Bombycilla garrulus) is 8 in. (20 cm) long and has yellow, white, and red wing markings. It breeds in N forests of Eurasia and America. The cedar waxwing (B. cedrorum), smaller and less colorful, breeds in Canada and the N U.S. Flocks of waxwings may invade city parks and gardens in winter, searching for berries. The Japanese waxwing (B. japonica) is restricted to NE Asia.


Wyoming
State (pop., 1997 est.: 480,000), W U.S. It covers an area of 97,809 sq mi (253,326 sq km); its capital is Cheyenne. It contains part of the Great Plains and the Black Hills. Its ranges of the Rocky Mtns. include the Bighorn, Tetons, and Wind River. Wyoming's highest point is Gannett Peak, at 13,804 ft (4,207 m) tall. The Continental ...

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