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cyanide
(Encyclopedia)cyanide sīˈənīdˌ [key], chemical compound containing the cyano group, –CN. Cyanides are salts or esters of hydrogen cyanide (hydrocyanic acid, HCN) formed by replacing the hydrogen with a metal...Paracelsus, Philippus Aureolus
(Encyclopedia)Paracelsus, Philippus Aureolus fĭlĭpˈəs ôrēōˈləs părəsĕlˈsəs [key], 1493?–1541, Swiss physician and alchemist. His original name Theophrastus Bombastus von Hohenheim. He traveled widel...Liepaja
(Encyclopedia)Liepaja or Liepaya both: lēĕˈpäyä [key], Ger. Libau, city (2011 provisional pop. 76,570), W Latvia. An ice-free port on the Baltic Sea, it is located at the end of an isthmus separating the Balti...Witwatersrand
(Encyclopedia)Witwatersrand wĭtwôˈtərzrăndˌ [key] [Afrik.,=white water ridge] or the Rand, region, Gauteng prov. (formerly a part of Transvaal), South Africa. The area, which forms the watershed between the V...hardening
(Encyclopedia)hardening, in metallurgy, treatment of metals to increase their resistance to penetration. A metal is harder when it has small grains, which result when the metal is cooled rapidly. Sometimes small ar...nitric acid
(Encyclopedia)nitric acid, chemical compound, HNO3, colorless, highly corrosive, poisonous liquid that gives off choking red or yellow fumes in moist air. It is miscible with water in all proportions. It forms an a...Yekaterinburg
(Encyclopedia)Yekaterinburg or Ekaterinburg svyĭrdlôfskˈ [key], city (1989 pop. 1,365,000), capital of the Sverdlovsk region and the administrative center of the Ural federal district, E European Russia, in the ...Poitiers
(Encyclopedia)Poitiers pwätyāˈ [key], city (1990 pop. 82,507), capital of Vienne dept., W central France, on the Clain River. The ancient capital of Poitou, it is now an industrial, agricultural, and communicati...Salvador, city, Brazil
(Encyclopedia)Salvador souN [key], city (1991 pop. 2,075,273), capital of Bahia state, E Brazil, a port on the Atlantic Ocean. It is the commercial center of a fertile crescent (the Recôncavo) and a shipping point...furnace
(Encyclopedia)furnace, enclosed space for the burning of fuel. There are many kinds of furnaces, the type depending upon the fuel and the use to which the heat produced within it is put. Most familiar are the furna...Browse by Subject
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