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technetium
(Encyclopedia)technetium tĕknēˈshēəm [key] [Gr. technetos=artificial], artificially produced radioactive chemical element; symbol Tc; at. no. 43; mass no. of most stable isotope 98; m.p. 2,200℃; b.p. 4,877...beech
(Encyclopedia) CE5 American beech Fagus grandifolia beech, common name for the Fagaceae, a family of trees and shrubs mainly of temperate and subtropical regions in the Northern Hemisphere. The principal genera...cesium
(Encyclopedia)cesium sēˈzēəm [key] [Lat.,=bluish gray], a metallic chemical element; symbol Cs; at. no. 55; at. wt. 132.90545; m.p. 28.4℃; b.p. 669.3℃; sp. gr. 1.873 at 20℃; valence +1. Cesium is a ductil...iguana
(Encyclopedia)iguana ĭgwäˈnə [key], name for several large lizards of the family Iguanidae, found in tropical America and the Galapagos. The common iguana (Iguana iguana) is a tree-living, strictly vegetarian s...Bacon, Francis, English philosopher and statesman
(Encyclopedia)Bacon, Francis, 1561–1626, English philosopher, essayist, and statesman, b. London, educated at Trinity College, Cambridge, and at Gray's Inn. He was the son of Sir Nicholas Bacon, lord keeper to Qu...pigeon
(Encyclopedia)pigeon, common name for members of the large family Columbidae, land birds, cosmopolitan in temperate and tropical regions, characterized by stout bodies, short necks, small heads, and thick, heavy pl...tungsten
(Encyclopedia)tungsten tŭngˈstən [key] [Swed.,=heavy stone], metallic chemical element; symbol W; at. no. 74; at. wt. 183.84; m.p. about 3,410℃; b.p. 5,660℃; sp. gr. 19.3 at 20℃; valence +2, +3, +4, +5, or...Coward, Noël
(Encyclopedia)Coward, Noël (Sir Noël Pierce Coward) nōˈəl [key], 1899–1973, English playwright, actor, composer, and director, b. Teddington, England. Coward first gained wide prominence in 1924 acting in hi...coke
(Encyclopedia)coke, substance obtained by the destructive distillation of bituminous coal. Coke bears the same relation to coal as does charcoal to wood. A hard, gray, massive, porous fuel, coke is the solid residu...Grisons
(Encyclopedia)Grisons grēsŏnzˈ, Fr. grēzôNˈ [key], Ger. Graubünden, Ital. Grigioni, Romansch Gri...Browse by Subject
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