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Spey

(Encyclopedia) Spey sp, river, c.105 mi (170 km) long, rising in the Mondhliath Mts., NE Scotland, and flowing generally NE through the Moray Firth to the North Sea. The river is rapid and…

Speyer

(Encyclopedia) Speyer shp´r, city (1994 pop. 49,310), Rhineland-Palatinate, SW Germany, on the Rhine River. The city, sometimes called Spires in English, is a river port and industrial center;…

Spezia, La

(Encyclopedia) Spezia, La lä spt´syä, city (1991 pop. 101,442), capital of La Spezia prov., in Liguria, NW Italy, on the Gulf of La Spezia (an arm of the Ligurian Sea) and at the eastern end of the…

sphagnum

(Encyclopedia) sphagnum sfg´nm or peat moss, any species of the large and widely distributed genus Sphagnum, economically the most valuable moss. Sphagnums, the principal constituent of peat,…

sphalerite

(Encyclopedia) sphalerite sfl´rt, sf´–, mineral composed of zinc sulfide, usually containing some iron and a little cadmium. It occurs in crystals of the isometric system but more generally in…

sphenodon

(Encyclopedia) sphenodon: see tuatara.

sphere

(Encyclopedia) sphere, in geometry, the three-dimensional analogue of a circle. The term is applied to the spherical surface, every point of which is the same distance (the radius) from a certain…

sphere of influence

(Encyclopedia) sphere of influence, term formerly applied to an area over which an outside power claims hegemony with the intention of subsequently gaining more definite control, as in colonization,…