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seaborgium
(Encyclopedia)seaborgium sēbôrˈgēəm [key], artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 271; m.p., b.p., sp. gr., and valence unknown. Situated...Báthory
(Encyclopedia)Báthory bäˈtôrē [key], Pol. Batory, Hungarian noble family. Stephen Báthory, 1477–1534, a loyal adherent of John I of Hungary (John Zápolya), was made (1529) voivode [governor] of Transylvani...paleontology
(Encyclopedia)paleontology pāˌlēəntŏlˈəjē [key] [Gr.,= study of early beings], science of the life of past geologic periods based on fossil remains. Knowledge of the existence of fossils dates back at least...curium
(Encyclopedia)curium kyo͝orˈēəm [key], artificially produced radioactive chemical element; symbol Cm; at. no. 96; mass no. of most stable isotope 247; m.p. about 1,340℃; b.p. 3,110℃; sp. gr. 13.5 (calculate...Pulitzer, Joseph
(Encyclopedia)Pulitzer, Joseph po͝oˈlĭtsər, pyo͞oˈ– [key], 1847–1911, American newspaper publisher and politician, b. Hungary. He emigrated to the United States in 1864, served a year in the Union army in...National Aeronautics and Space Administration
(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...Reuther, Walter Philip
(Encyclopedia)Reuther, Walter Philip ro͞oˈthər [key], 1907–70, American labor leader, b. Wheeling, W.Va. A tool- and diemaker, he became shop foreman in a Detroit automobile plant, meanwhile completing his hig...Tweed, William Marcy
(Encyclopedia)Tweed, William Marcy, 1823–78, American politician and Tammany leader, b. New York City. A bookkeeper, he became (1848) a volunteer fireman and as a result acquired influence in his ward. He was an ...plutonium
(Encyclopedia)plutonium plo͞otōˈnēəm [key], radioactive chemical element; symbol Pu; at. no. 94; mass no. of most stable isotope 244; m.p. 641℃; b.p. 3,232℃; sp. gr. 19.84 at 20℃; valence +3, +4, +5, or ...fossil
(Encyclopedia)fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and coal and sometime...Browse by Subject
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