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Opelousas

(Encyclopedia)Opelousas ŏpəlo͞oˈsəs [key], city (1990 pop. 18,151), seat of St. Landry parish, S central La.; inc. 1821. Its industries are based chiefly on the agricultural products and livestock of the surro...

Llano Estacado

(Encyclopedia)Llano Estacado läˈnō ĕstəkäˈdō [key] or Staked Plain, level, semiarid, plateaulike region of the S Great Plains, c.40,000 sq mi (103,600 sq km), E N.Mex. and W Tex., between the Pecos River an...

Kivu, lake, Congo and Rwanda

(Encyclopedia)Kivu, lake, 1,042 sq mi (2,699 sq km), 55 mi (89 km) long, on the Congo-Rwanda border, E central Africa; highest lake in Africa (4,788 ft/1,459 m). It is drained by the Ruzizi River, which flows S int...

STP

(Encyclopedia)STP or standard temperature and pressure, standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0℃ or 273.15K. The standard...

Salina

(Encyclopedia)Salina səlīˈnə [key], city (1990 pop. 42,303), seat of Saline co., central Kans., on the Smoky Hill River; founded 1858 by settlers opposed to slavery, inc. 1870. It is the marketing and shipping ...

Przemyśl

(Encyclopedia)Przemyśl pshĕˈmĭshəl [key], Ukr. Peremyshl, city (1989 est. pop. 67,000), Podkarpackie prov., extreme SE Poland, on the San River in the Carpathian foothills. It is a trade center and has metalwo...

Anchorage

(Encyclopedia)Anchorage ăngˈkərĭj [key], city (2020 pop. 291,247), Anchorage census div., S central Alaska, a port at the head of Cook Inlet; inc. 1920. It is the largest city in th...

palladium, chemical element

(Encyclopedia)palladium [Gr. Pallas, goddess of wisdom], metallic chemical element; symbol Pd; at. no. 46; at. wt. 106.42; m.p. 1,554℃; b.p. 2,970℃; sp. gr. 12.02 at 20℃; valence +2, +3, or +4. Palladium is a...

xenon

(Encyclopedia)xenon zēˈnŏn [key] [Gr.,=strange], gaseous chemical element; symbol Xe; at. no. 54; at. wt. 131.293; m.p. −111.9℃; b.p. −107.1℃; density 5.86 grams per liter at STP; valence usually 0. Xeno...

Raoult's law

(Encyclopedia)Raoult's law räo͞olzˈ [key] [for F. M. Raoult, a French physicist and chemist] states that the addition of solute to a liquid lessens the tendency for the liquid to become a solid or a gas, i.e., r...