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African languages

(Encyclopedia)African languages, geographic rather than linguistic classification of languages spoken on the African continent. Historically the term refers to the languages of sub-Saharan Africa, which do not belo...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

llanos

(Encyclopedia)llanos yäˈnōs [key], Spanish-American term for prairies, specifically those of the Orinoco River basin of N South America, in Venezuela and E Colombia. The llanos of the Orinoco are a vast, hot reg...

Arizona

(Encyclopedia)CE5 Arizona ârˌəzōˈnə [key], state in the SW United States. It is bordered by Utah (N), New Mexico (E), Mexico (S), and, largely across the Colorado River, Nevada and California (W); it touch...

Wake Island

(Encyclopedia)Wake Island, atoll with three islets (Wake, Wilkes, and Peale), 3 sq mi (7.8 sq km), central Pacific, between Hawaii and Guam. It is a U.S. military base and scientific research center under the juris...

Poinsett, Joel Roberts

(Encyclopedia)Poinsett, Joel Roberts poinˈsĕt [key], 1779–1851, American diplomat and politician, b. Charleston, S.C. In 1810 he was sent as a special commissioner to South America to investigate political cond...

Asunción

(Encyclopedia)Asunción äso͞onsyōˈn [key], city, S Paraguay, capital of Paraguay, on the Paraguay River. It is the principal port and chief industrial and cultural center of Paragua...

Juárez

(Encyclopedia)Juárez, officially Heroica Ciudad Juárez, city (1990 pop. 789,522) Chihuahua state, N Mexico, on the Rio Grande opposite El Paso, Tex. Connected with the United States by three international bridges...

button

(Encyclopedia)button, knoblike appendage used on wearing apparel either for ornament or for fastening. Although buttons were sometimes used as fasteners by Greeks and Romans, they were more often merely ornamental ...

yam

(Encyclopedia)yam, common name for some members of the Dioscoreaceae, a family of tropical and subtropical climbing herbs or shrubs with starchy rhizomes often cultivated for food. The largest genus, Dioscorea, is ...