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Zhou Enlai

(Encyclopedia) Zhou Enlai or Chou En-laiZhou Enlaiboth: jō ĕn-lī [key], 1898–1976, Chinese Communist leader. A member of a noted Mandarin family, he was educated at an American-supported school in…

biological warfare

(Encyclopedia) biological warfare, employment in war of microorganisms to injure or destroy people, animals, or crops; also called germ or bacteriological warfare. Limited attempts have been made in…

centipede

(Encyclopedia) CE5 Centipede, representative of the class Chilopoda centipede, common name for members of a single class, Chilopoda, of the phylum Arthropoda. Centipedes are the most familiar of…

Ngugi wa Thiong'o

(Encyclopedia) Ngugi wa Thiong'oNgugi wa Thiong'oĕng&oomacr;ˈgē wä tē-ŏngˈgō [key] or James Ngugi, 1938–, Kenyan writer, acclaimed as East Africa's foremost novelist. He studied at universities…

nuclear reactor

(Encyclopedia) CE5 Power reactor system nuclear reactor, device for producing controlled release of nuclear energy. Reactors can be used for research or for power production. A research reactor…

salt, chemical compound

(Encyclopedia) salt, chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases). Salts are also prepared by methods other than…

cortisone

(Encyclopedia) cortisonecortisonekôrˈtĭsōnˌ [key], steroid hormone whose main physiological effect is on carbohydrate metabolism. It is synthesized from cholesterol in the outer layer, or cortex, of…

growth hormone

(Encyclopedia) growth hormone or somatotropingrowth hormonesōmătˌətrōˈpən [key], glycoprotein hormone released by the anterior pituitary gland that is necessary for normal skeletal growth in humans (…

Henry V, Holy Roman emperor and German king

(Encyclopedia) Henry V, 1081–1125, Holy Roman emperor (1111–25) and German king (1105–25), son of Henry IV. Crowned joint king with his father in 1099, he put himself at the head of the party…

Assange, Julian Paul

(Encyclopedia) Assange, Julian Paul Assange, Julian Paul äsänjˈ [key], 1971–, Australian Internet journalist and activist, founder of WikiLeaks, a whistleblower website…