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screw

(Encyclopedia)screw, simple machine consisting essentially of a solid cylinder, usually of metal, around which an inclined plane winds spirally, either clockwise or counterclockwise. It is used to fasten one object...

protective coloration

(Encyclopedia)protective coloration, coloration or color pattern of an animal that affords it protection from observation either by its predators or by its prey. The most widespread form of protective coloration is...

Corman, Roger William

(Encyclopedia) Corman, Roger William, 1926-, American film director, screenwriter, and producer, b. Detroit, Mi., Stanford Univ. (B.S., 1947). Corman studied industr...

Warren Commission

(Encyclopedia)Warren Commission, popular name given to the U.S. Commission to Report upon the Assassination of President John F. Kennedy, established (Nov. 29, 1963) by executive order of President Lyndon B. Johnso...

translation

(Encyclopedia)translation [Lat.,=carrying across], the rendering of a text into another language. Applied to literature, the term connotes the art of recomposing a work in another language without losing its origin...

zinc

(Encyclopedia)zinc, metallic chemical element; symbol Zn; at. no. 30; at. wt. 65.38; m.p. 419.58℃; b.p. 907℃; sp. gr. 7.133 at 25℃; valence +2. Zinc is a lustrous bluish-white metal. It is found in Group 12 o...

pinochle

(Encyclopedia)pinochle pēˈnŭˌkəl [key], card game, probably derived from bezique, that was developed in the United States in the 19th cent. Pinochle is played by two, three, or four players, with a deck of 48 ...

Sand, George

(Encyclopedia)Sand, George ämäNdēnˈ ôrôrˈ lüsēˈ düpăN, bärônˈ düdväNˈ [key], 1804–76, French novelist. Other variant forms of her maiden name include Amantine Lucile Aurore Dupin. Born of an ari...

Defoe, Daniel

(Encyclopedia)Defoe or De Foe, Daniel dĭfōˈ [key], 1660?–1731, English writer, b. London. He was nearly sixty when he turned to writing novels. In 1719 he published his famous Life and Strange Surprising Adv...

flower

(Encyclopedia)CE5 Longitudinal cross section of a flower at the time of fertilization, showing a pollen grain and a pollen tube. flower, name for the specialized part of a plant containing the reproductive orga...