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meteor shower
(Encyclopedia) meteor shower, increase in the number of meteors observed in a particular part of the sky. The trails of the meteors of a meteor shower all appear to be traceable back to a single…parity
(Encyclopedia) parity or space parity, in physics, quantity that refers to the relationship between an object or process and the image that it can produce in a mirror. For example, any right-handed…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.…urinalysis
(Encyclopedia) urinalysisurinalysisy&oobreve;rˌənălˈĭsĭs [key], clinical examination of urine for the purpose of medical diagnosis. Urine is initially examined for such characteristics as color,…supply and demand
(Encyclopedia) supply and demand, in classical economics, factors that are said to determine price, by correlating the amount of a given commodity producers hope to sell at a certain price (supply),…Rio Treaty
(Encyclopedia) Rio Treaty (Inter-American Treaty of Reciprocal Assistance), signed Sept. 2, 1947, and originally ratified by all 21 American republics. Under the treaty, an armed attack or threat of…Patchen, Kenneth
(Encyclopedia) Patchen, Kenneth, 1911–72, American poet and novelist, b. Niles, Ohio. His writings, characterized by complete freedom of form, embrace genres as diverse as satire, fantasy, and…Eulenburg, Philipp, Fürst zu
(Encyclopedia) Eulenburg, Philipp, Fürst zuEulenburg, Philipp, Fürst zufēˈlĭp fürst ts&oomacr; oiˈlən-b&oobreve;rkh [key], 1847–1921, German diplomat, friend and confidential adviser of…Montholon, Charles Tristan, marquis de
(Encyclopedia) Montholon, Charles Tristan, marquis deMontholon, Charles Tristan, marquis deshärl trēstäNˈ märkēˈ də môNtōlôNˈ [key], 1783–1853, French general in the Napoleonic Wars. He accompanied…creosote
(Encyclopedia) creosotecreosotekrēˈəsōt [key], volatile, heavy, oily liquid obtained by the distillation of coal tar or wood tar. Creosote derived from beechwood tar has been used medicinally as an…Trending
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