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Saint Paul

(Encyclopedia)Saint Paul, city (1990 pop. 272,235), state capital and seat of Ramsey co., E Minn., on bluffs along the Mississippi River, contiguous with Minneapolis, forming the Twin Cities metropolitan area; inc....

San Antonio

(Encyclopedia)San Antonio săn ăntōˈnēō, əntōnˈ [key], city (1990 pop. 935,933), seat of Bexar co., S central Tex., at the source of the San Antonio River; inc. 1837. The third largest city in Texas, it is ...

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...

sea star

(Encyclopedia)sea star, also called starfish, echinoderm of the class Asteroidae, common in tide pools. Sea stars vary in size from under 1⁄2 in. (1.3 cm) to over 3 ft (90 cm) in diameter. They are commonly dull ...

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...

decimal system

(Encyclopedia)decimal system [Lat.,=of tenths], numeration system based on powers of 10. A number is written as a row of digits, with each position in the row corresponding to a certain power of 10. A decimal point...

fencing

(Encyclopedia)fencing, sport of dueling with foil, épée, and saber. Swords have been in use since the Bronze Age, and nearly all people of antiquity practiced swordsmanship. Fencing as a contest has existed at ...

Ferrara-Florence, Council of

(Encyclopedia)Ferrara-Florence, Council of, 1438–45, second part of the 17th ecumenical council of the Roman Catholic Church; the first part was the Council of Basel, canonically convened but after 1437 schismati...

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 ...

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...