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McGovern, George Stanley
(Encyclopedia)McGovern, George Stanley mÉ™gÅvˈərn [key], 1922–2012, U.S. senator from South Dakota (1963–81), b. Avon, S.Dak. He was a decorated B-24 bomber pilot during World War II. He later obtained degre...Nansen, Fridtjof
(Encyclopedia)Nansen, Fridtjof frÄtˈyôf nänˈsÉ™n [key], 1861–1930, Norwegian arctic explorer, scientist, statesman, and humanitarian. The diversity of Nansen's interests is shown in his writings, which inclu...nursing
(Encyclopedia)nursing, science of providing continuous care for sick or infirm people. While nursing as an occupation has always existed, it is only in fairly recent years that it has developed as a specialized pro...milk, food
(Encyclopedia)milk, liquid secreted by the mammary glands of female mammals as food for their young. The milk of the cow is most widely used by humans, but the milk of the mare, goat, ewe, buffalo, camel, ass, zebr...mental retardation
(Encyclopedia)mental retardation, below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living. Daily living skills...ant
(Encyclopedia)ant, any of the 2,500 insect species constituting the family Formicidae of the order Hymenoptera, to which the bee and the wasp also belong. Like most members of the order, ants have a “wasp waist,â...sulfur
(Encyclopedia)CE5 Sulfur crystals sulfur or sulphur sÅlˈfÉ™r [key], nonmetallic chemical element; symbol S; at. no. 16; interval in which at. wt. ranges 32.059–32.076; m.p. 112.8℃ (rhombic), 119.0℃ (mon...carbon
(Encyclopedia)CE5 The three solid forms of pure carbon: In the diamond crystal each carbon atom is surrounded symmetrically by four other carbons (at each of the four corners of a tetrahedron). In the graphite c...protein
(Encyclopedia)protein, any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellu...iron
(Encyclopedia)iron, metallic chemical element; symbol Fe [Lat. ferrum]; at. no. 26; at. wt. 55.845; m.p. about 1,535℃; b.p. about 2,750℃; sp. gr. 7.87 at 20℃; valence +2, +3, +4, or +6. Iron is biologically s...Browse by Subject
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