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radiation weapon

(Encyclopedia)radiation weapon or radiological weapon, a bomb or warhead that uses conventional chemical explosives to disperse radioactive material, sometimes called a “dirty bomb.” Designed to produce radiati...

juvenile delinquency

(Encyclopedia)juvenile delinquency, legal term for behavior of children and adolescents that in adults would be judged criminal under law. In the United States, definitions and age limits of juveniles vary, the max...

testosterone

(Encyclopedia)CE5 testosterone tĕstŏsˈtərōn [key], principal androgen, or male sex hormone. One of the group of compounds known as anabolic steroids, testosterone is secreted by the testes (see testis) but ...

barometer

(Encyclopedia)CE5 Aneroid barometer barometer bərŏmˈətər [key], instrument for measuring atmospheric pressure. It was invented in 1643 by the Italian scientist Evangelista Torricelli, who used a column...

Ricardo, David

(Encyclopedia)Ricardo, David, 1772–1823, British economist, of Dutch-Jewish parentage. At the age of 20 he entered business as a stockbroker and was so skillful in the management of his affairs that within five y...

beaver

(Encyclopedia)beaver, either of two large aquatic rodents, Castor fiber and Castor canadensis, known for their engineering feats. They were once widespread in N and central Eurasia except E Siberia, and in North Am...

Dniprohes

(Encyclopedia)Dniprohes dənyĭprōˈhās [key] [Ukr. abbr.,=Dnieper hydroelectric station], Rus. Dneproges, a hydroelectric station, central Ukraine, on the Dnieper River near Zaporizhzhya. The hydroelectric stati...

Dorians

(Encyclopedia)Dorians, people of ancient Greece. Their name was mythologically derived from Dorus, son of Hellen. Originating in the northwestern mountainous region of Epirus and SW Macedonia, they migrated through...

Cuenca, city, Spain

(Encyclopedia)Cuenca, city , capital of Cuenca prov., E central Spain, in Castile–La Mancha, at the confluence of the Huécar and Júcar rivers, c.3,000 ft (910 m) ...

Comaneci, Nadia

(Encyclopedia)Comaneci, Nadia nädyä kōmänēch [key], 1961–, Romanian-American gymnast. Under the tutelage of coach Bela Karolyi, she rose to prominence in the celebrated Romanian gymnastics program. Comaneci ...