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polyhedron
(Encyclopedia) CE5 Polyhedrons polyhedron pŏlˌēhēˈdrən [key], closed solid bounded by plane faces; each face of a polyhedron is a polygon. A cube is a polyhedron bounded by six polygons (in this case squar...perpetual-motion machine
(Encyclopedia)perpetual-motion machine, device that would be able to operate continuously and supply useful work, in violation of the laws of thermodynamics. A machine that would produce more energy in the form of ...dissociation
(Encyclopedia)dissociation, in chemistry, separation of a substance into atoms or ions. Thermal dissociation occurs at high temperatures. For example, hydrogen molecules (H2) dissociate into atoms (H) at very high ...Grand Island
(Encyclopedia)Grand Island <1> City (2020 pop. 53,131), seat of Hall co., S Nebr., on the Wood River near its junction with the Platte; settled 1857 on the Plat...Anderson, Maxwell
(Encyclopedia)Anderson, Maxwell, 1888–1959, American dramatist, b. Atlantic, Pa., grad. Univ. of North Dakota, 1911. His plays, many of which are written in verse, usually concern social and moral problems. Ander...electoral college
(Encyclopedia)electoral college, in U.S. government, the body of electors that chooses the president and vice president. The Constitution, in Article 2, Section 1, provides: “Each State shall appoint, in such Man...Mubarak, Muhammad Hosni
(Encyclopedia)Mubarak, Muhammad Hosni hōsˈnē mo͞obəˈrək [key], 1928–2020, president of Egypt (1981–2011). Air force commander (1972–75) and vice president (1975–81) of Egypt, he became president afte...monkeypox
(Encyclopedia)monkeypox, rare disease caused by infection with the monkeypox virus, which is related to the viruses that cause smallpox and cowpox. The symptoms of monkeypox, which typically take 1 to 2 weeks to ap...Mindszenty, József
(Encyclopedia)Mindszenty, József mĭndˈsĕntē [key], 1892–1975, Hungarian prelate, cardinal of the Roman Catholic Church. He was bishop of Veszprém during the German occupation of Hungary in World War II. His...asylum
(Encyclopedia)asylum əsīˈləm [key], extension of hospitality and protection to a fugitive and the place where such protection is offered. The use of temples and churches for this purpose in ancient and medieval...Browse by Subject
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