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Winnipeg, Lake

(Encyclopedia) Winnipeg, Lake, third largest lake of Canada, 9,465 sq mi (24,514 sq km), 264 mi (425 km) long and from 25 to 68 mi (40–109 km) wide, S central Man., Canada, N of Winnipeg. It is a…

Welsh springer spaniel

(Encyclopedia) Welsh springer spaniel, breed of medium-sized sporting dog developed several centuries ago in Wales. It stands about 17 in. (43.2 cm) high at the shoulder and weighs between 30 and 40…

celestite

(Encyclopedia) celestitecelestitesĕlˈəstīt [key] or celestinecelestitesĕlˈəstĭn, –tīn [key], mineral appearing in blue-tinged or white orthorhombic crystals or in fibrous masses. The natural sulfate…

nitric acid

(Encyclopedia) nitric acid, chemical compound, HNO3, colorless, highly corrosive, poisonous liquid that gives off choking red or yellow fumes in moist air. It is miscible with water in all…

Dinoflagellata

(Encyclopedia) dinoflagellatadinoflagellatadīˌnōflăjˌəlätˈə, –lāˈtə [key], phylum (division) of unicellular, mostly marine algae, called dinoflagellates. In some classification systems this division…

sun grebe

(Encyclopedia) sun grebe, common name for a tropical, mainly aquatic bird of the family Heliornithidae. Sun grebes, also called finfoots, are remarkable for their colorful, puffy-toed, webbed feet,…

spruce

(Encyclopedia) spruce, any plant of the genus Picea, evergreen trees or shrubs of the family Pinaceae (pine family) widely distributed in the Northern Hemisphere. The needles are angular in cross…

aberration

(Encyclopedia) CE5 A. Spherical aberration: Light rays near the edge of the lens are bent more and brought to focus nearer to the lens. B. Chromatic aberration: Shorter wavelengths (higher…

mutton

(Encyclopedia) mutton, flesh of mature sheep prepared as food (as opposed to the flesh of young sheep, which is known as lamb). Mutton is deep red with firm, white fat. In Middle Eastern countries it…

acerola

(Encyclopedia) acerolaacerolaăsˌərōˈlə [key] or barbados cherry, the edible fruit of Malpighia glabra, of the genera Bunchiosa and Malpighia of the family Malpighiaceae. The fleshy red stone fruits,…