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Singh, Manmohan

(Encyclopedia) Singh, ManmohanSingh, Manmohanmänmōˈhän sĭng [key], 1932–, Indian economist and government official, prime minister of India (2004–14), b. Gah, West Punjab. Educated at the…

lanthanide series

(Encyclopedia) lanthanide series, a series of metallic elements, included in the rare-earth metals, in Group 3 of the periodic table. Members of the series are often called lanthanides, although…

Mueller, Robert Swan, 3d

(Encyclopedia) Mueller, Robert Swan, 3d, 1944–, American law enforcement official, b. New York City, B.A. Princeton, 1966, M.A. New York Univ., 1967, J.D. Univ. of Virginia School of Law, 1973. After…

bohrium

(Encyclopedia) bohriumbohriumbôrˈēəm [key], artificially produced radioactive chemical element; symbol Bh; at. no. 107; mass number of most stable isotope 270; m.p., b.p., sp. gr., and valence…

senate, Roman

(Encyclopedia) senate, Roman, governing council of the Roman republic. It was the outgrowth of the council of the kings. By the 3d cent. b.c. the senate was a group of 300 men with a high degree of…

ovum

(Encyclopedia) ovumovumōˈvəm [key], in biology, specialized plant or animal sex cell, also called the egg, or egg cell. It is the female sex cell, or female gamete; the male gamete is the sperm. The…

periodic table

(Encyclopedia) CE5 periodic table, chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the…

Gottlieb, Adolph

(Encyclopedia) Gottlieb, Adolph, 1903–74, American painter, b. New York City. Gottlieb studied under John Sloan and Robert Henri. In the 1940s he created pictographs which were stylized, primitive…

Gouthière, Pierre

(Encyclopedia) Gouthière, PierreGouthière, Pierrepyĕr g&oomacr;tyĕrˈ [key], 1732?–c.1813, French metalworker. The greatest artist of ornamental bronzes of the period of Louis XVI, he produced a…

mean

(Encyclopedia) mean, in statistics, a type of average. The arithmetic mean of a group of numbers is found by dividing their sum by the number of members in the group; e.g., the sum of the seven…