Columbia Encyclopedia

Search results

500 results found

pitchblende

(Encyclopedia)pitchblende pĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide (UO2), it usually cont...

Pomeranian

(Encyclopedia)Pomeranian pŏmˌərāˈnēən [key], breed of small, sturdy toy dog descended from the sledge dogs of Iceland and Lapland. It stands about 6 in. (15.3 cm) high at the shoulder and weighs from 3 to 7 ...

string theory

(Encyclopedia)string theory, description of elementary particles based on one-dimensional curves, or “strings,” instead of point particles. Superstring theory, which is string theory that contains a kind of sym...

takin

(Encyclopedia)takin təkēnˈ [key], hoofed mammal, Budorcas toxicolor, found in Asia, most closely related to the musk ox. The takin is oxlike in build and may reach a shoulder height of 31⁄2 ft (107 cm). It has...

tang, in zoology

(Encyclopedia)tang, common name for certain members of the Acanthuridae, a family of mostly small, mainly reef-dwelling tropical fishes with compressed bodies and small mouths and teeth. Other members of the family...

tarsier

(Encyclopedia)tarsier tärˈsēər [key], small, nocturnal, forest-dwelling prosimian primate, genus Tarsius. There are at least three species found in the Philippines, in Sumatra and Borneo, and in Sulawesi. Tarsi...

Ward, John Quincy Adams

(Encyclopedia)Ward, John Quincy Adams, 1830–1910, American sculptor, b. Urbana, Ohio. He was trained under H. K. Brown, whom he assisted in the execution of the equestrian statue of George Washington in New York ...

Rugby, town, England

(Encyclopedia)Rugby, town (1991 pop. 59,039), Warwickshire, central England. An important railroad junction and engineering center, Rugby is the seat of one of England's most esteemed public schools. Rugby School w...

addax

(Encyclopedia)addax ădˈăks [key], large, desert-dwelling antelope. It is a single species, Addax nasomaculatus. The addax is yellowish-white in color, has a brown mane and throat fringe, and may stand as high as...

quagga

(Encyclopedia)quagga kwăgˈə [key], extinct type of zebra. It formerly inhabited open plains in S Africa, where its range overlapped that of the plains zebra, or common zebra (Equus quagga, formerly E. burchellii...