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Griffith, D. W.

(Encyclopedia)Griffith, D. W. (David Llewelyn Wark Griffith), 1875–1948, American movie director and producer, b. La Grange, Ky. Griffith was the first major American film director. He began his film career as an...

gadolinium

(Encyclopedia)gadolinium gădəlĭnˈēəm [key], metallic chemical element; symbol Gd; at. no. 64; at. wt. 157.25; m.p. 1,312℃; b.p. 3,233℃; sp. gr. 7.898 at 25℃; valence +3. Gadolinium is a malleable, ducti...

narwhal

(Encyclopedia)narwhal närˈwəl [key], a small arctic whale, Monodon monoceros. The males of the species, and an occasional female, bear a single, tightly spiraled tusk that measures up to 9 ft (2.7 m) in length. ...

Mordovia

(Encyclopedia)Mordovia môrdˈvə [key], constituent republic (1990 est. pop. 965,000), c.10,000 sq mi (25,900 sq km), E European Russia. Once a densely forested steppe, it consists of the Volga upland in the east ...

lightning

(Encyclopedia)lightning, electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cl...

macaque

(Encyclopedia)macaque məkäkˈ [key], name for Old World monkeys of the genus Macaca, related to mangabeys, mandrills, and baboons. All but one of the 19 species are found in Asia from Afghanistan to Japan, the Ph...

Matthias

(Encyclopedia)Matthias, 1557–1619, Holy Roman emperor (1612–19), king of Bohemia (1611–17) and of Hungary (1608–18), son of Holy Roman Emperor Maximilian II. He was appointed governor of Austria (1593) by h...

Panama Papers

(Encyclopedia)Panama Papers, popular name for the some 11.5 million internal documents belonging to the Panamanian-based law firm Mossack Fonseca that revealed information about secret offshore companies and bank a...

Pennebaker, D. A.

(Encyclopedia)Pennebaker, D. A. (Donn Alan Pennebaker), 1925–2019, pioneering documentary filmmaker, b. Evanston, Ill. His first film, Daybreak Express (1958), is a five-minute short detailing New York's doomed T...

tuatara

(Encyclopedia)tuatara –tāˈrə [key], lizardlike reptile, Sphenodon punctatus, last survivor of the reptilian order Rhynchocephalia, which flourished in the early Mesozoic era before the rise of the dinosaurs. A...