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oxidation and reduction
(Encyclopedia) oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term…gazetteer
(Encyclopedia) gazetteergazetteergăzˌĭtērˈ [key], dictionary or encyclopedia listing alphabetically the names of places, political divisions, and physical features of the earth and giving some…dictator
(Encyclopedia) dictator, originally a Roman magistrate appointed to rule the state in times of emergency; in modern usage, an absolutist or autocratic ruler who assumes extraconstitutional powers.…State of the Union Address: John Tyler (December 6, 1842)
John Tyler (December 6, 1842) To the Senate and House of Representatives of the United States: We have continued reason to express our profound gratitude to the Great Creator of All Things for…fats and oils
(Encyclopedia) fats and oils, group of organic substances that form an important part of the diet and also are useful in many industries. The fats are usually solid, the oils generally liquid at…Hohenstaufen
(Encyclopedia) HohenstaufenHohenstaufenhōˌənshtouˈfən [key], German princely family, whose name is derived from the castle of Staufen built in 1077 by a Swabian count, Frederick. In 1079, Frederick…bow and arrow
(Encyclopedia) bow and arrow, weapon consisting of two parts; the bow is made of a strip of flexible material, such as wood, with a cord linking the two ends of the strip to form a tension from which…Castile and León
(Encyclopedia) Castile and León Castile and León –lāōnˈ [key], autonomous community, 36,381 sq mi (94,227 sq km), N…hue and cry
(Encyclopedia) hue and cry, formerly, in English law, pursuit of a criminal immediately after he had committed a felony. Whoever witnessed or discovered the crime was required to raise the hue and…puts and calls
(Encyclopedia) puts and calls, in securities trading. A call is a contract that gives the holder the right to purchase a given stock at a specific price within a designated period of time. It is the…Trending
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