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olivine

(Encyclopedia)olivine ŏlĭvˈēn [key], an iron-magnesium silicate mineral, (Mg,Fe)2SiO4, crystallizing in the orthorhombic system. It is a common constituent of magnesium-rich, silica-poor igneous rocks; metamorp...

Belleville, cities, United States

(Encyclopedia)Belleville. 1 City (2020 pop. 42,404), seat of St. Clair co., SW Ill.; inc. 1819. Located in a coal-mining area, Belleville also has farm-related ...

teff

(Encyclopedia)teff, annual plant, Eragrostis tef, of the grass family (Poaceoe), whose seeds are a staple grain in Ethiopia and Eritrea. It is a gluten-free cereal grain, high in iron, protein, calcium, vitamin C, ...

lanthanum

(Encyclopedia)lanthanum lănˈthənəm [key] [Gr.,=to lie hidden], metallic chemical element; symbol La; at. no. 57; at. wt. 138.90547; m.p. about 920℃; b.p. about 3,460℃; sp. gr. 6.19 at 25℃; valence +3. Lan...

Kerch

(Encyclopedia)Kerch kyĕrch [key], city (1989 pop. 174,000), E Crimea. It lies on the Kerch Strait of the Black Sea and at the eastern end of the Kerch Peninsula, a strip of land between the Sea of Azov and the Bla...

metal

(Encyclopedia)metal, chemical element displaying certain properties by which it is normally distinguished from a nonmetal, notably its metallic luster, the capacity to lose electrons and form a positive ion, and th...

Linz

(Encyclopedia)Linz lĭnts [key], city (1991 pop. 203,044), capital of Upper Austria, NW Austria, a major port on the Danube River. It is a commercial and industrial center and a rail junction. Manufactures include ...

Jhansi

(Encyclopedia)Jhansi jänˈsē [key], city (1991 pop. 368,564), Uttar Pradesh state, N central India. A road and rail junction, agricultural market, and small industrial center, it has iron and steel mills and rail...

Mönchengladbach

(Encyclopedia)Mönchengladbach münˈ– [key], city (1994 pop. 265,312), North Rhine–Westphalia, W Germany. It is the twin city of adjacent Rheydt and is a major center of the German cotton textile industry. Tex...

Monongahela

(Encyclopedia)Monongahela mənŏnˌgəhēˈlə, –hāˈlə [key], river, 128 mi (206 km) long, formed at Fairmont, N W.Va., by the junction of the West Fork and Tygart rivers. It flows north, through a valley mark...