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calcite

(Encyclopedia)calcite kălˈsīt [key], very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium carbonate, CaCO3, but i...

vulcanization

(Encyclopedia)vulcanization vŭlˌkənəzāˈshən [key], treatment of rubber to give it certain qualities, e.g., strength, elasticity, and resistance to solvents, and to render it impervious to moderate heat and c...

Utrecht , city, Netherlands

(Encyclopedia)Utrecht, city (1994 pop. 234,106), capital of Utrecht prov., central Netherlands, on a branch of the Lower Rhine (Neder Rijn) River. It is a transportation, financial, and industrial center. Manufactu...

Shenyang

(Encyclopedia)Shenyang mo͞okˈdŭn [key], city (1994 est. pop. 3,762,000), capital of Liaoning prov., NE China, on the Hun River. It is China's fourth largest city and the leading manufacturing hub in a highly ind...

San Juan, city, Puerto Rico

(Encyclopedia)San Juan, city (1990 pop. 437,745), capital, largest city, chief port, and commercial and cultural center of Puerto Rico, NE Puerto Rico. Coffee, tobacco, sugar, and fruit are exported from the busy p...

Skopje

(Encyclopedia)Skopje skôpˈəlyə [key], city (1994 pop. 444,760), capital of North Macedonia, on the Vardar River. It is an important transportation and trade center as well as an industrial hub where chemicals, ...

Dar es Salaam

(Encyclopedia)Dar es Salaam därˈ-ĕs-sälämˈ [key] [Arab.,=haven of peace], city (2021 est. metro area pop. ...

Dakar

(Encyclopedia)Dakar dəkärˈ, dä– [key], city (1988 pop. 672,991), capital of Senegal, W Senegal, on Cape Verde Peninsula, a port on the Atlantic Ocean. Situated in a market-gardening region, Dakar is Senegal's...

paint

(Encyclopedia)paint, mixture of a pigment and a binding medium, usually thinned with a solvent to form a liquid vehicle. The term includes lacquer, portland cement paint, printing ink, calcimine, and whitewash. Pai...

Tianjin

(Encyclopedia)Tianjin or Tientsin both: tyänˈjĭnˈ [key], city and independent municipality (2010 pop. 12,938,224), NE China. In E central Hebei prov., it is a politically independent unit (4,400 sq mi/11,399 sq...