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microelectronics

(Encyclopedia)microelectronics, branch of electronic technology devoted to the design and development of extremely small electronic devices that consume very little electric power. Although the term is sometimes us...

mineral

(Encyclopedia)mineral, inorganic substance occurring in nature, having a characteristic and homogeneous chemical composition, definite physical properties, and, usually, a definite crystalline form. A few of the mi...

Henderson

(Encyclopedia)Henderson. 1 City (2020 pop. 27,801), seat of Henderson co., NW Ky., on the Ohio River, in an oil, coal, tobacco, corn, and livestock area; founded ...

Antifa

(Encyclopedia)Antifa, American political movement, is a loose coalition of progressive voices opposing the rise of homophobic, authoritarian, xenophobic, and racist movements worldwide. Inspired by the ...

Hermitage, museum, St. Petersburg, Russia

(Encyclopedia)Hermitage ĕrˌmētäzhˈ [key], museum in St. Petersburg, Russia, one of the world's foremost houses of art, consisting of six buildings along the embankment of the Neva River. Its central building, ...

Harlem

(Encyclopedia)Harlem, residential and business section of upper Manhattan, New York City, bounded roughly by 110th St., the East River and Harlem River, 168th St., Amsterdam Ave., and Morningside Park. The Dutch se...

Garvey, Marcus

(Encyclopedia)Garvey, Marcus, 1887–1940, American proponent of black nationalism, b. Jamaica. At the age of 14, Garvey went to work as a printer's apprentice. After leading (1907) an unsuccessful printers' strike...

hummingbird

(Encyclopedia)hummingbird, common name for members of the family Trochilidae, small, strictly New World birds, related to the swifts, and found chiefly in the mountains of South America. Hummingbirds vary in size f...

Duluth

(Encyclopedia)Duluth dəlo͞othˈ [key], city (2020 pop. 86,697), seat of St. Louis co., NE Minn., at the w...

Alexandria, cities, United States

(Encyclopedia)Alexandria. 1 City (2020 pop. 45,275), seat of Rapides parish, central La., on the Red River; inc. 1818. It is a trade, rail, and medical center for a rich agricultural and timber area. ...