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toluene

(Encyclopedia)toluene mĕthˌəlbĕnˈzēn [key], C7H8, colorless liquid aromatic hydrocarbon that melts at −95℃ and boils at 110.8℃. It is insoluble in water but highly soluble in most organic solvents. Tolu...

Roscommon, county, Republic of Ireland

(Encyclopedia)Roscommon rŏskŏmˈən [key], county (1991 pop. 51,876), 951 sq mi (2,463 sq km), central Republic of Ireland. The county seat is Roscommon. A part of the central plain of Ireland, the region is low-...

Connellsville

(Encyclopedia)Connellsville kŏnˈəlzvĭlˌ [key], city (2020 pop. 7,031), Fayette co., SW Pa., on the Youghiogheny ...

Chesapeake & Ohio Railway

(Encyclopedia)Chesapeake & Ohio Railway (C&O), former U.S. transportation company with railroad lines in eight states, Washington, D.C., and Ontario, Canada. Founded as the Louisa RR Company in Virginia in ...

alizarin

(Encyclopedia)alizarin əlĭzˈərĭn [key], or 1,2-dihydroxyanthraquinone, mordant vegetable dye obtained originally from the root of the madder plant (Rubia tinctorum), in which it occurs as a glucoside. The term...

fire clay

(Encyclopedia)fire clay, clay that has a high degree of resistance to heat. By the best standards it should have a fusion point higher than 1,600℃. The term “fire clay” is commonly held to exclude kaolin and ...

Port Harcourt

(Encyclopedia)Port Harcourt härˈkərt, –kôrt [key], city (1991 est. pop. 362,000), SE Nigeria, a deepwater port on the Bonny River in the Niger delta. It is an industrial and commercial center where steel and ...

Pôrto Alegre

(Encyclopedia)Pôrto Alegre pōrˈto͝o əlĕˈgrə [key], city (1991 pop. 1,263,403), capital of Rio Grande do Sul state, SE Brazil, on the Guaíba River. One of the chief industrial and commercial centers of Braz...

Ordos

(Encyclopedia)Ordos ôrˈdōs [key], Mandarin Erdesi, sandy desert plateau region, c.35,000 sq mi (90,650 sq km), Inner Mongolian Autonomous Region, N China; almost encircled by the great northern bend of the Huang...

pantanal

(Encyclopedia)pantanal pəntənälˈ [key], lowland region of SW Mato Grosso state, Brazil, bordering the Paraguay River and extending to the the western edge of the Brazilian Plateau. Parts of the pantanal extend ...