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chromatography
(Encyclopedia) chromatographychromatographykrōˌmətŏgˈrəfē [key], resolution of a chemical mixture into its component compounds by passing it through a system that retards each compound to a varying…asteroid
(Encyclopedia) CE5 The asteroid belt lies between the orbits of Mars and Jupiter. Gaps where no asteroids are found are called Kirkwood gaps. The Trojan asteroids share Jupiter's orbit with the…cockroach
(Encyclopedia) cockroach or roach, name applied to some 4,600 species of flat-bodied, oval insects in the order Blattodea. Cockroaches have long antennae, long legs adapted to running, and a flat…Grand Canyon
(Encyclopedia) Grand Canyon, great gorge of the Colorado River, one of the natural wonders of the world; c.1 mi (1.6 km) deep, from 4 to 18 mi (6.4–29 km) wide, and 217 mi (349 km) long, NW Ariz. The…Gulag
(Encyclopedia) Gulag, system of forced-labor prison camps in the USSR, from the Russian acronym [GULag] for the Main Directorate of Corrective Labor Camps, a department of the Soviet secret police (…mausoleum
(Encyclopedia) mausoleummausoleummôsəlēˈəm [key], a sepulchral structure or tomb, especially one of some size and architectural pretension, so called from the sepulcher of that name at Halicarnassus…earthworm
(Encyclopedia) earthworm, terrestrial, cylindrical segmented worm of the class Oligochaeta. There are 2,200 earthworm species, found all over the world except in arid and arctic regions and ranging…Stuart, James Ewell Brown
(Encyclopedia) Stuart, James Ewell Brown (Jeb Stuart), 1833–64, Confederate cavalry commander in the American Civil War, b. Patrick co., Va. Most of his U.S. army service was with the 1st Cavalry in…walrus
(Encyclopedia) walrus, marine mammal, Odobenus rosmarus, found in Arctic seas. Largest of the fin-footed mammals, or pinnipeds (see seal), the walrus is also distinguished by its long tusks and by…tuna
(Encyclopedia) tuna or tunny, game and food fishes, the largest members of the family Scombridae (mackerel family) and closely related to the albacore and bonito. They have streamlined bodies with…Trending
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