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Paleozoic era

(Encyclopedia)Paleozoic era pāˌlēəzōˈĭk [key], a major division (era) of geologic time (see Geologic Timescale, tablegeologic timescale, table) occurring between 570 to 240 million years ago. It is subdivide...

fold

(Encyclopedia)fold, in geology, bent or deformed arrangement of stratified rocks. These rocks may be of sedimentary or volcanic origin. Although stratified rocks are normally deposited on the earth's surface in hor...

antimony

(Encyclopedia)antimony ănˈtĭmōˌnē [key] [Lat. antimoneum], semimetallic chemical element; symbol Sb [Lat. stibium,=a mark]; at. no. 51; at. wt. 121.760; m.p. 630.74℃; b.p. 1,750℃; sp. gr. (metallic form) ...

administrative law

(Encyclopedia)administrative law, law governing the powers and processes of administrative agencies. The term is sometimes used also of law (i.e., rules, regulations) developed by agencies in the course of their op...

Paul, Saint

(Encyclopedia)Paul, Saint, d. a.d. 64? or 67?, the apostle to the Gentiles, b. Tarsus, Asia Minor. He was a Jew. His father was a Roman citizen, probably of some means, and Paul was a tentmaker by trade. His Jewish...

Ruth, Babe

(Encyclopedia)Ruth, Babe (George Herman Ruth), 1895–1948, American baseball player, considered by many the greatest of all baseball players, b. Baltimore. Ruth, a left hander, proved to be (1914–19) a formida...

Bellini

(Encyclopedia)Bellini jōvänˈnē [key], c.1430–1516, who was first active in Padua where he worked with his father and brother. Also influenced by Mantegna, who became his brother-in-law in 1454, Giovanni paint...

Han, Chinese dynasty

(Encyclopedia)Han hän [key], dynasty of China that ruled from 202 b.c. to a.d. 220. Liu Pang, the first Han emperor, had been a farmer, minor village official, and guerrilla fighter under the Ch'in dynasty. During...

monarchy

(Encyclopedia)monarchy, form of government in which sovereignty is vested in a single person whose right to rule is generally hereditary and who is empowered to remain in office for life. The power of this sovereig...

seafloor spreading

(Encyclopedia)CE5 Schematic model of the oceanic crust, showing seafloor spreading seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwate...