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lemming

(Encyclopedia) lemming, name for several species of mouselike rodents related to the voles. All live in arctic or northern regions, inhabiting tundra or open meadows. They frequently nest in…

gnu

(Encyclopedia) gnugnun&oomacr; [key] or wildebeestgnuwĭlˈdəbēstˌ [key], large African antelope, genus Connochaetes. Its heavy head and humped shoulders resemble those of a buffalo, while the…

marble

(Encyclopedia) marble, metamorphic rock composed wholly or in large part of calcite or dolomite crystals, the crystalline texture being the result of metamorphism of limestone by heat and pressure.…

cesium

(Encyclopedia) cesiumcesiumsēˈzēəm [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…

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…

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,…

tent caterpillar

(Encyclopedia) tent caterpillar, common name for the larvae of the members of a family of moths (Lasiocampidae), easily recognized by the large silk tents, or webs, that the larvae construct during…

Grisons

(Encyclopedia) Grisons Grisons grēsŏnzˈ, Fr. grēzôNˈ [key], Ger. Graubünden, Ital.…

iguana

(Encyclopedia) iguanaiguanaĭgwäˈnə [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,…