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drone

(Encyclopedia)drone or remotely piloted vehicle, a pilotless craft guided by remote control. Aircraft, ships, and land vehicles can be designed or outfitted as drones. Underwater vessels—both piloted and pilotles...

Leo X, pope

(Encyclopedia)Leo X, 1475–1521, pope (1513–21), a Florentine named Giovanni de' Medici; successor of Julius II. He was the son of Lorenzo de' Medici, was made a cardinal in his boyhood, and was head of his fami...

Maathai, Wangari Muta

(Encyclopedia)Maathai, Wangari Muta wän-gäˈrē mātīˈ [key], 1940–2011, Kenyan environmental...

Lee, Charles

(Encyclopedia)Lee, Charles, 1731–82, American Revolutionary army officer, b. Cheshire, England. He first came to America to serve in the French and Indian War and took part in General Braddock's disastrous campai...

Rosicrucians

(Encyclopedia)Rosicrucians rōzĭkro͞oˈshənz [key], members of an esoteric society or group of societies, who claim that their order has been in existence since the days of ancient Egypt and has over the course ...

scurvy

(Encyclopedia)scurvy, deficiency disorder resulting from a lack of vitamin C (ascorbic acid) in the diet. Scurvy does not occur in most animals because they can synthesize their own vitamin C, but humans, other pri...

Alcatraz

(Encyclopedia)Alcatraz ălˈkətrăzˌ [key] [Sp. Álcatraces=pelicans], rocky island in San Francisco Bay, W Calif, about one mile (1.61 km) north of San Francisco. Alcatraz was first sighted by the Spanish in 177...

charter school

(Encyclopedia)charter school, alternative type of American public school that, while paid for by taxes, is independent of the public-school system and relatively free from state and local regulations. A charter sch...

Howe, Frederic Clemson

(Encyclopedia)Howe, Frederic Clemson, 1867–1940, American lawyer, government official, and political scientist, b. Meadville, Pa. He practiced law (1894–1909) in Cleveland, Ohio, where he was closely associated...

Bucer, Martin

(Encyclopedia)Bucer or Butzer, Martin byo͞oˈsər, bo͞otˈsər [key], 1491–1551, German Protestant reformer born Martin Kuhhorn. At 14 years of age he joined the Dominican order, and he studied at Heidelberg, w...