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sonar

(Encyclopedia)sonar sōˈnär [key], device used underwater for locating submerged objects and for submarine communication by means of sound waves. The term sonar is an acronym for sound navigation ranging. The mai...

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 ...

tiger

(Encyclopedia)tiger, large carnivore of the cat family, Panthera tigris, found in the forests of Asia. There are six subspecies of P. tigris: Amur or Siberian, Sumatran, Malayan, North Indochinese, Bengal, and Sout...

radar

(Encyclopedia)radar, system or technique for detecting the position, movement, and nature of a remote object by means of radio waves reflected from its surface. Although most radar units use microwave frequencies, ...

Lassen Volcanic National Park

(Encyclopedia)Lassen Volcanic National Park, 106,372 acres (43,081 hectares), N Calif., at the southern end of the Cascade Range. Proclaimed as Lassen Peak and Cinder Cone national monuments in 1907, the two were i...

Mifune, Toshiro

(Encyclopedia)Mifune, Toshiro təshērˈō mĭfo͞oˈnē [key], 1920–97, Japanese actor, b. Qingdao, China. Mifune was a versatile actor, noted for a wide range of roles in more than 120 films. He appeared in mor...

Morandi, Giorgio

(Encyclopedia)Morandi, Giorgio jôrˈjō môränˈdē [key], 1890–1964, Italian painter and etcher, b. Bologna. He studied at that city's Fine Arts Academy (grad. 1913) and from 1930 to 1954 was a professor there...

Moon, Sun Myung

(Encyclopedia)Moon, Sun Myung sŭn yŭng mo͞on [key], 1920–2012, South Korean religious leader. He was an engineering student in Japan and a dockworker before founding (1954) the Unification Church with a doctri...

Area 51

(Encyclopedia)Area 51, name for a U.S. military site, S Nev., c.80 mi (130 km) NNW of Las Vegas. Shrouded in secrecy since the mid-20th cent., it is located within the U.S. Air Force's enormous Nevada Test and Trai...

musk deer

(Encyclopedia)musk deer, small, antlerless deer, Moschus moschiferus, found in wet mountain forests from Siberia and Korea to the Himalayas. In summer it ranges up to 8,000 ft (2,400 m). It is from 20 to 24 in. (50...