Columbia Encyclopedia

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triceps

(Encyclopedia)triceps, any muscle having three heads, or points of attachment, but especially the triceps brachii at the back of the upper arm. One head originates on the shoulder blade and two on the upper-arm bon...

Beebe, William

(Encyclopedia)Beebe, William (Charles William Beebe) bēˈbē [key], 1877–1962, American ornithologist, explorer, and author, b. Brooklyn, N.Y., B.S. Columbia, 1898. He became (1899) curator of ornithology and la...

silky terrier

(Encyclopedia)silky terrier, breed of agile, spirited toy dog originated in Australia in the early 20th cent. It stands about 10 in. (25 cm) high at the shoulder and weighs from 8 to 10 lb (3.6.–4.5 kg). Its silk...

Servile Wars

(Encyclopedia)Servile Wars, name given in Roman history to three slave uprisings. The agricultural slaves were exploited by their owners, who had extreme powers and were never averse to using them. The first of the...

Reyes, Rafael

(Encyclopedia)Reyes, Rafael räfäĕlˈ rāˈyās [key], 1850–1921, president of Colombia (1904–9). As a young man, he explored the upper Amazon wilderness with his brother. Later he distinguished himself in th...

chemical reaction

(Encyclopedia)chemical reaction, process by which one or more substances may be transformed into one or more new substances. Energy is released or is absorbed, but no loss in total molecular weight occurs. When, fo...

Demetrius I, king of ancient Syria

(Encyclopedia)Demetrius I (Demetrius Soter) sōˈtər [key], c.187–150 b.c., king of ancient Syria (162–150 b.c.), son of Seleucus IV. He was sent as a hostage to Rome, where he remained during the reigns of hi...

dominoes

(Encyclopedia)dominoes, game played with a set of rectangular pieces (usually 28 in number) called dominoes. Each piece (made of wood, bone, ivory, plastic, or other material) has one blank face and one face marked...

cover crop

(Encyclopedia)cover crop, green temporary crop grown to prevent or reduce erosion and to improve the soil by building up its organic content. Green-manure crops, which are specifically grown for their organic conte...

Cori, Carl Ferdinand

(Encyclopedia)Cori, Carl Ferdinand, 1896–1984, and Gerty Theresa Cori kōrˈē, kôrˈē [key], 1896–1957, American biochemists, b. Prague. Soon after receiving their medical degrees and marrying, they emigrate...