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Frankfurt

(Encyclopedia)Frankfurt äm mīn [key], city (2021 pop. 841,795), Hesse, central Germany, a port on the Mai...

chemical bond

(Encyclopedia)chemical bond, mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the for...

English units of measurement

(Encyclopedia)English units of measurement, principal system of weights and measures used in a few nations, the only major industrial one being the United States. It actually consists of two related systems—the U...

rubber

(Encyclopedia)CE5 Basic molecules in rubber rubber, any solid substance that upon vulcanization becomes elastic; the term includes natural rubber (caoutchouc) and synthetic rubber. The term elastomer is sometim...

Norway

(Encyclopedia)CE5 Norway, Nor. Norge, officially Kingdom of Norway, constitutional monarchy (2015 est. pop. 5,200,000), 125,181 sq mi (324,219 sq km), N Europe, occupying the western part of the Scandinavian pen...

Ghent

(Encyclopedia)Ghent gĕnt [key], Du. Gent, Fr. Gand, city, capital of East Flanders prov., W Belgium, at th...

Trinidad and Tobago

(Encyclopedia)CE5 Trinidad and Tobago trĭnˈĭdăd, təbāˈgō [key], officially Republic of Trinidad and Tobago, republic (2015 est. pop. 1,222,000), 1,980 sq mi (5,129 sq km), West Indies. The capital is Por...

submarine

(Encyclopedia)submarine, naval craft capable of operating for an extended period of time underwater. Submarines are almost always warships, although a few are used for scientific, business, or other purposes (see a...

uranium

(Encyclopedia)uranium yo͞orāˈnēəm [key], radioactive metallic chemical element; symbol U; at. no. 92; mass number of most stable isotope 238; m.p. 1,132℃; b.p. 3,818℃; sp. gr. 19.1 at 25℃; valence +3, +4...

Missouri, state, United States

(Encyclopedia)CE5 Missouri mĭzo͝orˈē, –ə [key], one of the midwestern states of the United States. It is bordered by Illinois, Kentucky, and Tennessee, across the Mississippi River (E), Arkansas (S), Okla...