Columbia Encyclopedia

Search results

500 results found

drug poisoning

(Encyclopedia)drug poisoning, toxic effects caused by an administered drug. Worldwide more than 9 million natural and synthetic chemicals have been identified; fewer than 3000 cause more than 95% of acidental and d...

Sandrart, Joachim Von

(Encyclopedia)Sandrart, Joachim Von yōäˈkhĭm fən zäntˈrärt [key], 1606–88, German painter. An academic painter fond of chiaroscuro effects, Sandrart is best remembered for his comprehensive history of art...

International Trade Commission, United States

(Encyclopedia)International Trade Commission, United States, independent agency of the U.S. government established in 1916 as the Tariff Commission; renamed International Trade Commission in 1975. It is charged wit...

statin

(Encyclopedia)statin, any of a class of drugs that reduces the amount of cholesterol in the blood by interfering with the production of cholesterol in the liver; commonly prescribed statins include atorvastatin, lo...

Rodoreda, Mercè

(Encyclopedia)Rodoreda, Mercè, 1909–83, Spanish novelist writing in Catalan. Exiled for several decades in Paris and Geneva following the Spanish Civil War, Rodoreda focuses her novel Time of the Doves (1962, tr...

Heda, Willem Claasz

(Encyclopedia)Heda, Willem Claasz vĭlˈəm kläs hāˈdä [key], 1594–c.1678, Dutch still-life painter. His excellent studies of tables laden with food, called ontbijt [breakfast piece] still life, are seen in m...

weightlessness

(Encyclopedia)weightlessness, the absence of any observable effects of gravitation. This condition is experienced by an observer when he and his immediate surroundings are allowed to move freely in the local gravit...

mulch

(Encyclopedia)mulch, any material, usually organic, that is spread on the ground to protect the soil and the roots of plants from the effects of soil crusting, erosion, or freezing; it is also used to retard the gr...

tom-tom

(Encyclopedia)tom-tom, name popularly applied to high-pitched hand drums, usually barrel-shaped and having either one or two drumheads of skin. They are tunable to specific pitches. Supposedly of Native American or...

Diphilus

(Encyclopedia)Diphilus dĭfˈĭləs [key], fl. 300 b.c., Greek dramatist of the New Comedy, b. Sinope. His many dramas (perhaps 100) were extensively adapted by Plautus and Terence and influenced the entire Roman s...