Columbia Encyclopedia

(Encyclopedia) collateral kəlătˈərəl [key], something of value given or pledged as security for payment of a loan. Collateral consists usually of financial instruments, such as stocks, bonds, and negotiable pap...

(Encyclopedia) inequality, in mathematics, statement that a mathematical expression is less than or greater than some other expression; an inequality is not as specific as an equation, but it does contain informatio...

(Encyclopedia) Jerusalem artichoke, tuberous-rooted perennial (Helianthus tuberosus) of the family Asteraceae (aster family), native to North America, where it was early cultivated by the indigenous inhabitants. In ...

(Encyclopedia) Koop, C. Everett (Charles Everett Koop), 1916–2013, American physician, U.S. surgeon general (1982–89), b. Brooklyn, N.Y., grad. Dartmouth (B.S., 1937), Cornell Medical College (M.D., 1941), Univ....

(Encyclopedia) Kantrowitz, Adrian kănˈtrəwĭtsˌ [key], 1918–2008, American surgeon, b. New York City, grad. New York Univ. (1940). The son of a physician, Kantrowitz received his M.D. from the Long Island Coll...

(Encyclopedia) stock, in finance, instrument certifying to shares in the ownership of a corporation. Bonds are similar evidences of shares in a loan to a corporation. Stock yields no dividends until claims of bondho...

(Encyclopedia) Sutherland, George, 1862–1942, associate justice of the U.S. Supreme Court (1922–38), b. Buckinghamshire, England. He was taken by his family to Springville, Utah from England in 1864. After study...

(Encyclopedia) precipitation, in chemistry, a process in which a solid is separated from a suspension, sol, or solution. In a suspension such as sand in water the solid spontaneously precipitates (settles out) on st...

(Encyclopedia) Balbus (Lucius Cornelius Balbus) bălˈbəs [key], fl. 1st cent. b.c., Roman statesman, b. Gades (now Cádiz, Spain). He won notice for brilliant service against Sertorius, and Pompey brought him to R...

(Encyclopedia) Wilson, J. Tuzo (John Tuzo Wilson), 1908–93, Canadian geologist and geophysicist, b. Ottawa, Ph.D. Princeton (1936), M.A. Cambridge (1940). He worked for the Geological Survey of Canada (1936–39) ...