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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 ...

nuclear energy

(Encyclopedia)CE5 Graph of binding energy per nucleon as a function of mass number nuclear energy, the energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these pr...

destroyer

(Encyclopedia)destroyer, class of warship very fast relative to its length, generally equipped with torpedos, antisubmarine equipment, and medium-caliber and antiaircraft guns. The newest destroyers are equipped wi...

Fernández de Córdoba, Gonzalo

(Encyclopedia)Fernández de Córdoba, Gonzalo fārnänˈdāth dā kōrˈdōbä [key], 1453–1515, Spanish general, called the Great Captain. He fought in the civil wars preceding and following the accession of Is...

navy

(Encyclopedia)navy, originally, all ships of a nation, whether for war or commerce; the term navy now designates only such vessels as are built and maintained specifically for war. There have been three major devel...

bow and arrow

(Encyclopedia)bow and arrow, weapon consisting of two parts; the bow is made of a strip of flexible material, such as wood, with a cord linking the two ends of the strip to form a tension from which is propelled th...

Majid, Ali Hassan al-

(Encyclopedia)Majid, Ali Hassan al- äˈlē hāˈsän äl-mäjēdˈ [key], 1941–2010, Iraqi general and Ba'athist, cousin of Saddam Hussein. After Hussein took power (1979), Majid played a pivotal role in the Ba'...

Arden, John

(Encyclopedia)Arden, John ärˈdən [key], 1930–2012, English playwright and novelist best known for his politically engaged work of the 1950s and 60s, a period during which he was considered one of Britain's maj...

Tseng Kuo-fan

(Encyclopedia)Tseng Kuo-fan dzŭng gwô-fän [key], 1811–72, Chinese general and statesman of the Ch'ing dynasty. He organized (1853) the Hunan army, the first of the great regional armies that were raised to sup...

Foley, Thomas Stephen

(Encyclopedia)Foley, Thomas Stephen, 1929–2013, U.S. congressman, Speaker of the U.S. House of Representatives (1989–95), b. Spokane, Wash. A lawyer, he was elected to the U.S. House of Representatives in 1964 ...