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Piqua

(Encyclopedia)Piqua pĭkˈwā [key], city (1990 pop. 20,612), Miami co., W Ohio, on the Miami River; settled 1797, chartered 1929. It is an industrial city with diverse manufactures, including airplane and automobi...

Yamaguchi

(Encyclopedia)Yamaguchi yämäˈgo͞ochē [key], city (1990 pop. 129,461), capital of Yamaguchi prefecture, SW Honshu, Japan. A great castle city from the 14th to 16th cent. and the site of many Buddhist temples an...

mica

(Encyclopedia)mica mīˈkə [key], general term for a large group of minerals, hydrous silicates of aluminum and potassium, often containing magnesium, ferrous iron, ferric iron, sodium, and lithium and more rarely...

Michoacán

(Encyclopedia)Michoacán mēchōäkänˈ [key], state (1990 pop. 3,548,199), 23,202 sq mi (60,093 sq km), S Mexico. Morelia is the capital. Dominated by the mountains of the Sierra Madre Occidental and the volcanic...

Hewitt, Abram Stevens

(Encyclopedia)Hewitt, Abram Stevens hyo͞oˈĭt [key], 1822–1903, American industrialist and political leader, b. Haverstraw, N.Y. He became a lawyer, and friendship with a son and marriage to a daughter of Peter...

Guangxi Zhuang Autonomous Region

(Encyclopedia)Guangxi Zhuang Autonomous Region gwängˈshēˈ jwängˈ [key], province, c.85,000 sq mi (220,150 sq km), S China, bo...

sword

(Encyclopedia)sword, weapon of offense and defense in personal combat, consisting of a blade with a sharp point and one or two cutting edges, set in a hilt with a handle protected by a metal case or cross guard. Th...

plumbing

(Encyclopedia)plumbing, piping systems inside buildings for water supply and sewage. The Romans had a highly developed plumbing system; water was brought to Rome by aqueducts and distributed to homes in lead pipes�...

cement

(Encyclopedia)cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then grinding it to a ...

magnesium

(Encyclopedia)magnesium măgnēˈzēəm, –zhəm [key], metallic chemical element; symbol Mg; at. no. 12; at. wt. 24.3050; m.p. about 648.8℃; b.p. about 1,090℃; sp. gr. 1.738 at 20℃; valence +2. In 1808, Sir...