Columbia Encyclopedia

Search results

500 results found

analogy

(Encyclopedia)CE5 Analogy in bird and insect wings analogy, in biology, the similarities in function, but differences in evolutionary origin, of body structures in different organisms. For example, the wing of ...

burdock

(Encyclopedia)burdock bûrˈdäk [key], common name of any plant of the genus Arctium of the family Asteraceae (aster family), coarse biennials indigenous to temperate Eurasia and mostly weedy in North America. The...

wildcat

(Encyclopedia)wildcat, common name of Old World cats (Felis silvestris) of Europe, Asia, and Africa. The wildcat resembles a large domestic tabby cat with a heavy tail; its fur is brownish to gray, with a pattern o...

adenoids

(Encyclopedia)adenoids ădˈənoidzˌ [key], common name for the pharyngeal tonsils, spongy masses of lymphoid tissue that occupy the nasopharynx, the space between the back of the nose and the throat. Normally the...

criticism

(Encyclopedia)criticism, the interpretation and evaluation of literature and the arts. It exists in a variety of literary forms: dialogues (Plato, John Dryden), verse (Horace, Alexander Pope), letters (John Keats),...

CARICOM

(Encyclopedia)CARICOM: see Caribbean Community and Common Market. ...

symmetry

(Encyclopedia)symmetry, generally speaking, a balance or correspondence between various parts of an object; the term symmetry is used both in the arts and in the sciences. In art and design, it is often used in a s...

red shift

(Encyclopedia)red shift or redshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect...

Greenspan, Alan

(Encyclopedia)Greenspan, Alan, 1926–, American economist, chairman of the Federal Reserve Board (1987–2006), b. New York City. Influenced by the philosophy of Ayn Rand, Greenspan is a strong supporter of the fr...

humidity

(Encyclopedia)humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air; relative humidity (...