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equator

(Encyclopedia)equator, imaginary great circle around the earth, everywhere equidistant from the two geographical poles and forming the base line from which latitude is reckoned. The equator, which measures c.24,902...

Io, in astronomy

(Encyclopedia)Io īˈō [key], in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. Io is subject to Jupiter's enormous tidal forces and is, as a result, the most volcanically active body in ...

anglesite

(Encyclopedia)anglesite ăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the orthorhombic system and o...

Holt, Henry

(Encyclopedia)Holt, Henry, 1840–1926, American author and publisher, b. Baltimore. In 1866 he became a partner in the publishing firm that became (1873) Henry Holt & Company. He was the author of several nove...

Haridwar

(Encyclopedia)Haridwar härˈdwärˌ [key], city, Uttarakhand state, N India, on the Ganges River. The head...

fusel oil

(Encyclopedia)fusel oil fyo͞oˈzəl [key], oily, colorless liquid with a disagreeable odor and taste. It is a mixture of alcohols (largely amyl alcohols) and fatty acids, formed during the alcoholic fermentation o...

Norris, John

(Encyclopedia)Norris, John, 1657–1711, English clergyman and philosopher. As the most prominent follower of Malebranche he wrote, in exposition of that philosopher's system, An Essay towards the Theory of the Ide...

Notre Dame, University of

(Encyclopedia)Notre Dame, University of nōˈtər dām, nōˈtrə [key], at Notre Dame, Ind., near South Bend; Roman Catholic; coeducational; est. and opened 1842, chartered 1844. It has a noted law school and comp...

Olney, Jesse

(Encyclopedia)Olney, Jesse ŏlˈnē, ōlˈnē [key], 1798–1872, American geographer and teacher. His Practical System of Modern Geography (1828), a standard work for decades, revolutionized the teaching of geogra...

Mackenzie, Sir William

(Encyclopedia)Mackenzie, Sir William, 1849–1923, Canadian railroad builder and financier, b. Ontario. In the early 1870s he became a railroad contractor. He constructed portions of the Canadian National and the C...