Columbia Encyclopedia

Search results

397 results found

drone

(Encyclopedia)drone or remotely piloted vehicle, a pilotless craft guided by remote control. Aircraft, ships, and land vehicles can be designed or outfitted as drones. Underwater vessels—both piloted and pilotles...

mulberry

(Encyclopedia)CE5 Red mulberry, Morus rubra mulberry, common name for the Moraceae, a family of deciduous or evergreen trees and shrubs, often climbing, mostly of pantropical distribution, and characterized by ...

Islam in Africa

(Encyclopedia)Islam in Africa, the development of the Muslim religion on the African continent. During Muhammad's lifetime a group of Muslims escaped Meccan persecution (615) by fleeing to Ethiopia, where the Negus...

Gdańsk

(Encyclopedia)Gdańsk dănˈsĭg [key], city (1993 est. pop. 466,700), capital of Pomorskie prov., N Poland, on a branch of the Vistula and on the Gulf of Gdańsk. One of the chief Polish ports on the Baltic Sea, i...

marine biology

(Encyclopedia)marine biology, study of ocean plants and animals and their ecological relationships. Marine organisms may be classified (according to their mode of life) as nektonic, planktonic, or benthic. Nektonic...

land use

(Encyclopedia)land use, exploitation of land for agricultural, industrial, residential, recreational, or other purposes. Because the United States historically has a laissez-faire attitude toward land use, the land...

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...

Hemingway, Ernest

(Encyclopedia)Hemingway, Ernest, 1899–1961, American novelist and short-story writer, b. Oak Park, Ill. one of the great American writers of the 20th cent. Hemingway's fiction usually focuses on people living ...

grass

(Encyclopedia)CE5 Edible grasses grass, any plant of the family Poaceae (formerly Gramineae), an important and widely distributed group of vascular plants, having an extraordinary range of adaptation. Numbering...

pulse, in botany

(Encyclopedia)CE5 Sweet pea, Lathyrus odoratus, a member of the pulse family pulse, in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family...