Columbia Encyclopedia

Search results

500 results found

drug resistance

(Encyclopedia)drug resistance, condition in which infecting bacteria can resist the destructive effects of drugs such as antibiotics and sulfa drugs. Drug resistance has become a serious public health problem, sinc...

Han, Chinese dynasty

(Encyclopedia)Han hän [key], dynasty of China that ruled from 202 b.c. to a.d. 220. Liu Pang, the first Han emperor, had been a farmer, minor village official, and guerrilla fighter under the Ch'in dynasty. During...

Phoenix, city, United States

(Encyclopedia)Phoenix, city (1990 pop. 983,403), state capital and seat of Maricopa co., S Ariz., on the Salt River; inc. 1881. It is the largest city in Arizona, the hub of the rich agricultural region of the Salt...

war

(Encyclopedia)war, armed conflict between states or nations (international war) or between factions within a state (civil war), prosecuted by force and having the purpose of compelling the defeated side to do the w...

Celtic languages

(Encyclopedia)Celtic languages, subfamily of the Indo-European family of languages. At one time, during the Hellenistic period, Celtic speech extended all the way from Britain and the Iberian Peninsula in the west ...

Latvia

(Encyclopedia)CE5 Latvia lătˈvēə [key], Latvian Latvija, officially Republic of Latvia, republic (2015 est. pop. 1,993,000), 24,590 sq mi (63,688 sq km), north central Europe. It borders on Estonia in the no...

Reconstruction

(Encyclopedia)Reconstruction, 1865–77, in U.S. history, the period of readjustment following the Civil War. At the end of the Civil War, the defeated South was a ruined land. The physical destruction wrought by t...

New England

(Encyclopedia)New England, name applied to the region comprising six states of the NE United States—Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut. The region is thought to have been ...

modem

(Encyclopedia)modem [modulator/demodulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals. A modem attach...

Cheney, Dick

(Encyclopedia)Cheney, Dick (Richard Bruce Cheney) chēˈnē, chāˈ– [key], 1941–, Vice President of the United States (2001–9), b. Lincoln, Nebr. His family moved to Casper, Wyo., when he was 13, and he atte...