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type
(Encyclopedia)type, for printing, was invented in China (c.1040), using woodblocks. Related devices, such as seals and stamps for making impressions in clay, had been used in ancient times in Babylon and elsewhere....library
(Encyclopedia)library, a collection of books or other written or printed materials, as well as the facility in which they are housed and the institution that is responsible for their maintenance. Modern libraries m...sewerage
(Encyclopedia)sewerage, system for the removal and disposal of chiefly liquid wastes and of rainwater, which are collectively called sewage. The average person in the industrialized world produces between 60 and 14...lead, chemical element
(Encyclopedia)lead, metallic chemical element; symbol Pb [Lat. plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals used by h...Roman architecture
(Encyclopedia)Roman architecture, structures produced by the ancient Romans. Most important among the structures developed by the Romans themselves were basilicas, baths, amphitheaters, and triumphal arches. U...Etruscan civilization
(Encyclopedia)Etruscan civilization, highest civilization in Italy before the rise of Rome. The core of the territory of the Etruscans, known as Etruria to the Latins, was northwest of the Tiber River, now in moder...Douglas, Stephen Arnold
(Encyclopedia)Douglas, Stephen Arnold, 1813–61, American statesman, b. Brandon, Vt. The Democratic national convention at Charleston, S.C., in 1860 adopted Douglas's recommendations in a platform advocating non...Middle Eastern religions
(Encyclopedia)Middle Eastern religions, religious beliefs and practices of the ancient inhabitants of the Middle East. Little was known about the religions of the city-states of W Asia until stores of religious lit...diamond
(Encyclopedia)diamond, mineral, one of two crystalline forms of the element carbon (see allotropy), the hardest natural substance known, used as a gem and in industry. The discoveries of 1870–71 in South Africa...Charleston, cities, United States
(Encyclopedia)Charleston. 1 City (2020 pop. 17,286), seat of Coles co., E Ill.; inc. 1835. Charleston is an industrial, rail, and trade center located in an ...Browse by Subject
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