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spectral class
(Encyclopedia) CE5 spectral class, in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically....Ruscha, Ed
(Encyclopedia)Ruscha, Ed (Edward Joseph Ruscha 4th) ro͞oshāˈ [key], 1937–, American artist, b. Omaha, Neb. He is closely associated with Los Angeles, where he moved to attend (1956–60) the Chouinard Art Inst...Prokofiev, Sergei Sergeyevich
(Encyclopedia)Prokofiev, Sergei Sergeyevich syĭrgāˈ syĭrgāˈəvĭch prōkôfˈēĕf [key], 1891–1953, Russian composer, pianist, and conductor. Prokofiev achieved wide popularity with his lively music, in wh...polytheism
(Encyclopedia)polytheism pŏlˈēthēĭzəm [key], belief in a plurality of gods in which each deity is distinguished by special functions. The gods are particularly synonymous with function in the Vedic religion (...Pawnee
(Encyclopedia)Pawnee pônēˈ [key], Native North Americans whose language belongs to the Caddoan branch of the Hokan-Siouan linguistic stock (see Native American languages). At one time the Pawnee lived in what is...dog
(Encyclopedia) CE5 General anatomy of a dog dog, carnivorous, domesticated wolf (Canis lupus familiaris) of the family Canidae, to which the jackal, fox, and tanuki also belong. The family Canidae is sometimes r...Dickinson, John
(Encyclopedia)Dickinson, John, 1732–1808, American patriot and statesman, b. Talbot co., Md. After studying law in Philadelphia and in London at the Middle Temple, he developed a highly successful practice in Phi...Delaware, indigenous people of North America
(Encyclopedia)Delaware dĕlˈəwâr, –wər [key], English name given several closely related Native American groups of the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American langua...hunting
(Encyclopedia)hunting, act of seeking, following, and killing wild animals for consumption or display. It differs from fishing in that it involves only land animals. Hunting was a necessary activity of early humans...electronic game
(Encyclopedia)electronic game, device or computer program that provides entertainment by challenging a person's eye-hand coordination or mental abilities. Made possible by the development of the microprocessor, ele...Browse by Subject
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