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Mindanao

(Encyclopedia)Mindanao mĭndənäˈō, –nouˈ [key], island (1990 pop. 13,535,738), 36,537 sq mi (94,631 sq km), second largest of the Philippine islands, NE of Borneo. About one fifth of the island's population ...

Peloponnesus

(Encyclopedia)Peloponnesus mōrēˈə [key], peninsula (1991 pop. 1,086,935), c.8,300 sq mi (21,500 sq km), S Greece. It is linked with central Greece by the Isthmus of Corinth, and it is washed by the Aegean Sea o...

magnesium

(Encyclopedia)magnesium măgnēˈzēəm, –zhəm [key], metallic chemical element; symbol Mg; at. no. 12; at. wt. 24.3050; m.p. about 648.8℃; b.p. about 1,090℃; sp. gr. 1.738 at 20℃; valence +2. In 1808, Sir...

Java

(Encyclopedia)Java jäˈvə [key], island (1990 pop. 107,525,520), c.51,000 sq mi (132,090 sq km), Indonesia, S of Borneo, from which it is separated by the Java Sea, and SE of Sumatra across Sunda Strait. Although...

glass

(Encyclopedia)glass, hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature. Glass has become invaluable in modern architecture, illumination, elect...

Vanuatu

(Encyclopedia)Vanuatu vänˌwäto͞oˈ [key], officially Republic of Vanuatu, independent republic (2015 est. pop. 265,000), c.5,700 sq mi (14,760 sq km), South Pacific, E of Australia. Vanuatu is a 450-mi (724-km)...

battery, electric

(Encyclopedia)CE5 Lead storage cell: At the lead-dioxide electrode, electrons from the circuit combine with lead dioxide and sulfuric acid to form lead sulfate and water. At the spongy-lead electrode, lead react...

iron

(Encyclopedia)iron, metallic chemical element; symbol Fe [Lat. ferrum]; at. no. 26; at. wt. 55.845; m.p. about 1,535℃; b.p. about 2,750℃; sp. gr. 7.87 at 20℃; valence +2, +3, +4, or +6. Iron is biologically s...

Transylvania

(Encyclopedia)Transylvania trănˌsĭlvāˈnyə [key], Rom. Transilvania or Ardeal, Hung. Erdély, Ger. Siebenbürgen, historic region and province (21,292 sq mi/55,146 sq km), central Romania. A high plateau, Tran...

Botswana

(Encyclopedia)CE5 Botswana bŏtswäˈnə [key], officially Republic of Botswana, republic (2020 est. pop. ...