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hydrogenation

(Encyclopedia)hydrogenation hīdrôjˈənāˌshən, hīˌdrəjənāˈshən [key], chemical reaction of a substance with molecular hydrogen, usually in the presence of a catalyst. A common hydrogenation is the harde...

Livingstone, David

(Encyclopedia)Livingstone, David lĭvˈĭngstən, –stōnˌ [key], 1813–73, Scottish missionary and explorer in Africa, the first European to cross the African continent. From 1841 to 1852, while a medical missi...

Hempstead

(Encyclopedia)Hempstead hĕmpˈstĕd, –stəd [key]. <1> Town (2020 pop. 793,409), Nassau co., SE N.Y., ...

Lalique, René

(Encyclopedia)Lalique, René rənāˈ lälēkˈ [key], 1860–1945, French jewelery designer and glassmaker whose works are landmarks of arts nouveau and deco, b. Ay; apprenticed to Parisian goldsmith Louis Aucoq a...

liver

(Encyclopedia)liver, largest glandular organ of the body, weighing about 3 lb (1.36 kg). It is reddish brown in color and is divided into four lobes of unequal size and shape. The liver lies on the right side of th...

soap

(Encyclopedia)soap, a cleansing agent. It cleanses by lowering the surface tension of water, by emulsifying grease, and by absorbing dirt into the foam. Ancient peoples are believed to have employed wood ashes and ...

digestive system

(Encyclopedia) CE5 Digestive system digestive system, in the animal kingdom, a group of organs functioning in digestion and assimilation of food and elimination of wastes. Virtually all animals have a digestive ...

ice cream

(Encyclopedia)ice cream, sweet frozen dessert, made from milk fat and solids, sugar, flavoring, a stabilizer (usually gelatin), and sometimes eggs, fruits, or nuts. The mix is churned at freezing temperature to att...

hypothalamus

(Encyclopedia)hypothalamus hīˌpəthălˈəməs [key], an important supervisory center in the brain, rich in ganglia, nerve fibers, and synaptic connections. It is composed of several sections called nuclei, each ...

Price, Lloyd

(Encyclopedia) Price, Lloyd, 1933-2021, b. Kenner, La. Price began his first band at age 18 while also working in construction. Signed to Specialty Records, his firs...
 

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