Columbia Encyclopedia

Search results

158 results found

compact disc

(Encyclopedia)compact disc (CD), a small plastic disc used for the storage of digital data. As originally developed for audio systems, the sound signal is sampled at a rate of 44,100 times a second, then each sampl...

CD, abbreviation for compact disc

(Encyclopedia)CD: see compact disc.

digital versatile disc

(Encyclopedia)digital versatile disc or digital video disc (DVD), a small plastic disc used for the storage of digital data. The successor media to the compact disc (CD), a DVD can have more than 100 times the stor...

slipped disc

(Encyclopedia)slipped disc, rupture or herniation of an intervertebral disc. These discs separate and cushion the vertebrae, the segments of the spinal column. They are composed of an outer rim of fibrous connectiv...

laser disc

(Encyclopedia)laser disc: see videodisc.

Mayflower Compact

(Encyclopedia)Mayflower Compact, in U.S. colonial history, an agreement providing for the temporary government of Plymouth Colony. The compact was signed (1620) on board the Mayflower by the adult male passengers; ...

Delaware River Basin Compact

(Encyclopedia)Delaware River Basin Compact dĕlˈəwâr, –wər [key], providing for the utilization and development of the water resources of the Delaware River basin. In 1961 the federal government and the state...

Family Compact, in Canadian history

(Encyclopedia)Family Compact, name popularly applied to a small, powerful group of men who dominated the government of Upper Canada (Ontario) from the closing years of the 18th cent. to the beginnings of responsibl...

CD-ROM

(Encyclopedia)CD-ROM: see compact disc.

Family Compact, in French and Spanish history

(Encyclopedia)Family Compact, several alliances between France and Spain in the form of agreements between the French and Spanish branches of the Bourbon family. The first of the three compacts, the Treaty of the E...