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ytterbium

(Encyclopedia)ytterbium ĭtûrˈbēəm [key] [for Ytterby, a town in Sweden], metallic chemical element; symbol Yb; at. no. 70; at. wt. 173.054; m.p. 819℃; b.p. about 1,194℃; sp. gr. about 7.0; valence +2 or +3...

Walla Walla

(Encyclopedia)Walla Walla wŏlˈə wŏlˈə [key], city (2006 est. pop. 30,945), seat of Walla Walla co., SE Wash., at the junction of the Walla Walla River and Mill Creek, near the Oreg. line; inc. 1862. It is a t...

Cantabria

(Encyclopedia)Cantabria käntäˈbrēä [key], autonomous community and coextensive prov., 2,057 sq mi (5,328 sq ...

Catullus

(Encyclopedia)Catullus (Caius Valerius Catullus) kətŭlˈəs [key], 84? b.c.–54? b.c., Roman poet, b. Verona. Of a well-to-do family, he went c.62 b.c. to Rome. He fell deeply in love, probably with Clodia, sist...

blister beetle

(Encyclopedia)blister beetle, common name for certain soft-bodied, usually black or brown, mostly elongate and cylindrical beetles belonging to the family Meloidae. Blister beetles are common insects found feeding ...

bowerbird

(Encyclopedia)bowerbird, common name for any of several species of birds of the family Ptilonorhynchidae, native to Australia and New Guinea, which build, for courtship display, a bower of sticks or grasses. Usuall...

Gore, Albert Arnold, Jr.

(Encyclopedia)Gore, Albert Arnold, Jr., 1948–, Vice President of the United States (1993–2001), b. Washington, D.C., grad. Harvard, 1969. After serving in the army in Vietnam and working as a reporter, he was e...

copper, chemical element

(Encyclopedia)copper, metallic chemical element; symbol Cu [Lat. cuprum=copper]; at. no. 29; at. wt. 63.546; m.p. 1,083.4℃; b.p. 2,567℃; sp. gr. 8.96 at 20℃; valence +1 or +2. Copper and some of its alloys ha...

New Castle

(Encyclopedia)New Castle. 1 City (1990 pop. 4,837), New Castle co., N Del., on the Delaware River. Mineral, metal, food, paper, and gypsum products are among its varied manufactures. It is also a major book distrib...

mica

(Encyclopedia)mica mīˈkə [key], general term for a large group of minerals, hydrous silicates of aluminum and potassium, often containing magnesium, ferrous iron, ferric iron, sodium, and lithium and more rarely...