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Mantle, Mickey

(Encyclopedia)Mantle, Mickey (Mickey Charles Mantle), 1931–95, American baseball player, b. Spavinaw, Okla. In 1951, he joined the New York Yankees of the American League; eventually he replaced Joe DiMaggio in c...

compression

(Encyclopedia)compression, external stress applied to an object or substance, tending to cause a decrease in volume (see pressure). Gases can be compressed easily, solids and liquids to a very small degree if at al...

condensation

(Encyclopedia)condensation, in physics, change of a substance from the gaseous (vapor) to the liquid state (see states of matter). Condensation is the reverse of vaporization, or change from liquid to gas. It can b...

treaty port

(Encyclopedia)treaty port, port opened to foreign trade by a treaty. The term is usually confined to ports in those countries that formerly strongly objected to foreign trade or attempted altogether to exclude it. ...

pruning

(Encyclopedia)pruning, the horticultural practice of cutting away an unwanted, unnecessary, or undesirable plant part, used most often on trees, shrubs, hedges, and woody vines. Man uses pruning to remove diseased ...

Slim Helú, Carlos

(Encyclopedia)Slim Helú, Carlos cärˈlōs slēm hēlo͞oˈ [key], 1940–, Mexican business executive. The son of a Lebanese Maronite immigrant who became a successful merchant and real-estate investor, Slim was ...

snakebite

(Encyclopedia)snakebite, wound inflicted by the teeth of a snake. The bite of a nonvenomous snake is rarely serious. Venomous snakes have fangs, hollow teeth through which poison is injected into a victim. All type...

Zelaya Rosales, José Manuel

(Encyclopedia)Zelaya Rosales, José Manuel hōsāˈ mänwĕlˈ sālīˈä rōsäˈlās [key], 1952–, Honduran political leader. A businessman and rancher, he joined the Liberal party of Honduras (PLH) in 1970. He...

Canada Act

(Encyclopedia)Canada Act, also called the Constitutional Act of 1982, which made Canada a fully sovereign state. The British Parliament approved it on Mar. 25, 1982, and Queen Elizabeth II proclaimed it on Apr. 17,...

norepinephrine

(Encyclopedia)norepinephrine nôrˌĕpīnĕfˈrən [key], a neurotransmitter in the catecholamine family that mediates chemical communication in the sympathetic nervous system, a branch of the autonomic nervous sys...