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urea
(Encyclopedia) CE5 ureaureay&oobreve;ēˈə [key], organic compound that is the principal end product of nitrogen metabolism in most mammals. Urea was the first animal metabolite to be isolated…thermoelectricity
(Encyclopedia) thermoelectricity, direct conversion of heat into electric energy, or vice versa. The term is generally restricted to the irreversible conversion of electricity into heat described by…botulism
(Encyclopedia) botulismbotulismbŏchˈəlĭzˌəm [key], acute poisoning resulting from ingestion of food containing toxins produced by the bacillus Clostridium botulinum. The bacterium can grow only in an…breast implant
(Encyclopedia) breast implant, saline- or silicone-filled prosthesis used after mastectomy as a part of the breast reconstruction process or used cosmetically to augment small breasts. An implant…toxic waste
(Encyclopedia) toxic waste is waste material, often in chemical form, that can cause death or injury to living creatures. It usually is the product of industry or commerce, but comes also from…Work Projects Administration
(Encyclopedia) Work Projects Administration (WPA), former U.S. government agency, established in 1935 by executive order of President Franklin Delano Roosevelt as the Works Progress Administration;…helium
(Encyclopedia) heliumheliumhēˈlēəm [key], gaseous chemical element; symbol He; at. no. 2; at. wt. 4.0026; m.p. below −272℃ at 26 atmospheres pressure; b.p. −268.934℃ at 1 atmosphere pressure; density…Nibelungen
(Encyclopedia) NibelungenNibelungennēˈbəl&oobreve;ngˌən [key] or Nibelungs, in Germanic myth and literature, an evil family possessing a magic hoard of gold. The hoard is accursed. The…Neuchâtel
(Encyclopedia) NeuchâtelNeuchâtelnöshätĕlˈ [key], Ger. Neuenburg, canton (1993 pop. 162,600), 309 sq mi (800 sq km), NW Switzerland, in the Jura Mts. It is a forested region with pastures. Cattle are…safety movement
(Encyclopedia) safety movement, widespread effort to prevent accidents that followed the increasing number of casualties in industry, traffic and transportation, and homes arising out of the…Trending
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