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semantics

(Encyclopedia)semantics [Gr.,=significant] in general, the study of the relationship between words and meanings. The empirical study of word meanings and sentence meanings in existing languages is a branch of lingu...

reclamation of land

(Encyclopedia)reclamation of land, practice of converting land deemed unproductive into arable land by such methods as irrigation, drainage, flood control, altering the texture and mineral and organic content of so...

diabetes

(Encyclopedia)diabetes or diabetes mellitus məlīˈtəs [key], chronic disorder of glucose (sugar) metabolism caused by inadequate production or use of insulin, a hormone produced in specialized cells (beta cells ...

meteorite

(Encyclopedia)meteorite, meteor that survives the intense heat of atmospheric friction and reaches the earth's surface. Because of the destructive effects of this friction, only the very largest meteors become mete...

American architecture

(Encyclopedia)American architecture, the architecture produced in the geographical area that now constitutes the United States. Wright, generally acknowledged as one of the greatest architects of the 20th cent., ...

Pacific Ocean

(Encyclopedia)CE5 Pacific Ocean, largest and deepest ocean, c.70,000,000 sq mi (181,300,000 sq km), occupying about one third of the earth's surface; named by the explorer Ferdinand Magellan; the southern part i...

British Columbia

(Encyclopedia)CE5 British Columbia, province, 366,255 sq mi (948,600 sq km), including 6,976 sq mi (18,068 sq km) of water surface, W Canada. The Conservatives ...

Ohio, state, United States

(Encyclopedia)CE5 Ohio, midwestern state in the Great Lakes region of the United States. It is bordered by Pennsylvania (NE), West Virginia (SE) and Kentucky (S) across the Ohio River, Indiana (W), and Michigan ...

Rockefeller, John Davison

(Encyclopedia)Rockefeller, John Davison, 1839–1937, American industrialist and philanthropist, b. Richford, N.Y. He moved (1853) with his family to a farm near Cleveland and at age 16 went to work as a bookkeeper...

Dutch Wars

(Encyclopedia)Dutch Wars, series of conflicts between the English and Dutch during the mid to late 17th cent. The wars had their roots in the Anglo-Dutch commercial rivalry, although the last of the three wars was ...