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obbligato
(Encyclopedia) obbligatoobbligatoŏbləgäˈtō [key] [Ital.,=obligatory], in music, originally a term by which a composer indicated that a certain part was indispensable to the music. Obbligato was thus…Colossus of Rhodes
(Encyclopedia) Colossus of RhodesColossus of Rhodeskəlŏsˈəs [key], large statue of Helios, the sun god, destroyed by an earthquake in antiquity. Consider one of the Seven Wonders of the World by the…evaporation
(Encyclopedia) evaporation, change of a liquid into vapor at any temperature below its boiling point. For example, water, when placed in a shallow open container exposed to air, gradually disappears…stealth technology
(Encyclopedia) stealth technology, designs and materials engineered for the military purpose of avoiding detection by radar or any other electronic system. Stealth, or antidetection, technology is…isogamy
(Encyclopedia) isogamyisogamyīsŏgˈəmē [key], in biology, a condition in which the sexual cells, or gametes, are of the same form and size and are usually indistinguishable from each other. Many algae…Messier catalog
(Encyclopedia) Messier catalogMessier catalogmĕsyāˈ [key], systematic list of nebulae and star clusters. A first list, compiled and published in 1771 by Charles Messier, contained 45 objects. The…Dunkirk, city, United States
(Encyclopedia) Dunkirk, city (2020 pop. 12,743), Chautauqua co., SW N.Y., on Lake Erie; founded c.1800, inc. as a city 1880. It is a port of entry and…Aristides
(Encyclopedia) AristidesAristidesărĭstīˈdēz [key], d. c.468 b.c., Athenian statesman and general. He was one of the 10 generals who commanded the Athenians at the battle of Marathon (490 b.c.) and in…Wacker process
(Encyclopedia) Wacker process, an industrial process for the manufacture of ethanol by oxidizing ethene. For example, bubbling ethylene and oxygen when treated by an acidified water solution of…propylaeum
(Encyclopedia) propylaeumpropylaeumprŏpĭlēˈəm [key], in Greek architecture, a monumental entrance to a sacred enclosure, group of buildings, or citadel. A roofed passage terminated by a row of…Trending
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