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hardening
(Encyclopedia) hardening, in metallurgy, treatment of metals to increase their resistance to penetration. A metal is harder when it has small grains, which result when the metal is cooled rapidly.…Cape Cod
(Encyclopedia) Cape Cod, narrow peninsula of glacial origin, 399 sq mi (1,033 sq km), SE Mass., extending 65 mi (105 km) E and N into the Atlantic Ocean. It is generally flat, with sand dunes, low…sandblast
(Encyclopedia) sandblast, stream of sand or other abrasive particles driven by a jet of compressed air or water or by centrifugal force against a surface to clean or abrade it. When centrifugal force…Priapulida
(Encyclopedia) Priapulida, phylum consisting of 17 species of predatory, unsegmented marine worms that live in the sand and mud at the sea bottom. The largest are 4 to 6 in. (10–17 cm) long, but the…Landes, region, France
(Encyclopedia) LandesLandesläNd [key], region, SW France. It is a vast, flat, nearly triangular tract of sand and marshland, stretching along the Atlantic coast for more than 100 mi (160 km) between…oyster catcher
(Encyclopedia) oyster catcher, common name for members of the family Haematopodidae, ploverlike shorebirds, cosmopolitan in distribution. Their distinctive red bills are long, blunt, and flattened,…dispersion, in chemistry
(Encyclopedia) dispersion, in chemistry, mixture in which fine particles of one substance are scattered throughout another substance. A dispersion is classed as a suspension, colloid, or solution.…caddis fly
(Encyclopedia) caddis fly, any of various insects of the order Trichoptera, with four hairy wings usually held back rooflike over the abdomen, long antennae, and chewing mouthparts. The aquatic…concrete
(Encyclopedia) concrete, structural masonry material made by mixing broken stone or gravel with sand, cement, and water and allowing the mixture to harden into a solid mass. The cement is the…Great Sandy Desert
(Encyclopedia) Great Sandy Desert, Australia's second-largest desert, c.110,000 sq mi (284,900 sq km), Western Australia and Northern Territory. Lying between the Tanami Desert (NE) and the Gibson…Trending
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