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activation energy

(Encyclopedia)CE5 Energy profile of an exothermic reaction: Although the total energy of the products is less than that of the reactants, the activation energy must be added to weaken or break existing bonds bef...

Oslo

(Encyclopedia)Oslo äzˈlō, äsˈ–, Nor. o͝osˈlo͝o [key], city (1995 pop. 482,555), capital of Norway, of Akershus co., and of Oslo co. (175 sq mi/453 sq km), SE Norway, at the head of the Oslofjord (a deep i...

vaporization

(Encyclopedia)vaporization, change of a liquid or solid substance to a gas or vapor. There is fundamentally no difference between the terms gas and vapor, but gas is used commonly to describe a substance that appea...

Wilmington

(Encyclopedia)Wilmington. 1 City (1990 pop. 71,529), seat of New Castle co., NE Del., on the Delaware River and tributary streams, the Christina and the Brandywine; settled 1638, inc. as a city 1832. The state's la...

Tampa

(Encyclopedia)Tampa tămˈpə [key], city (1990 pop. 280,015), seat of Hillsborough co., W Fla., a port of entry with an impressive harbor on Tampa Bay; inc. 1855. The third largest city in the state, Tampa has lon...

Verona, city, Italy

(Encyclopedia)Verona vərôˈnä [key], city (1991 pop. 255,824), capital of Verona prov., Venetia, NE Italy, on the Adige River. It is a transportation junction and a major industrial and agricultural center, with...

blood pressure

(Encyclopedia)blood pressure, force exerted by the blood upon the walls of the arteries. The pressure in the arteries originates in the pumping action of the heart, and pressure waves can be felt at the wrist and a...

Uralic and Altaic languages

(Encyclopedia)Uralic and Altaic languages yo͝orălˈĭk, ăltāˈĭk [key], two groups of related languages thought by many scholars to form a single Ural-Altaic linguistic family. However, other authorities hold ...

basketball

(Encyclopedia)basketball, game played generally indoors by two opposing teams of five players each. Basketball was conceived in 1891 by Dr. James Naismith, a physical education instructor at the YMCA college in Spr...

Indo-European

(Encyclopedia)CE5 Indo-European, family of languages having more speakers than any other language family. It is estimated that approximately half the world's population speaks an Indo-European tongue as a first ...