Columbia Encyclopedia

Search results

500 results found

Polaris

(Encyclopedia)Polaris pōlârˈĭs [key] or North Star, star nearest the north celestial pole (see equatorial coordinate system). It is in the constellation Ursa Minor (see Ursa Major and Ursa Minor; Bayer designat...

magnolia, in botany

(Encyclopedia)magnolia, common name for plants of the genus Magnolia, and for the Magnoliaceae, a family of deciduous or evergreen trees and shrubs, often with showy flowers. They are principally of north temperate...

bark, in botany

(Encyclopedia)bark, outer covering of the stem of woody plants, composed of waterproof cork cells protecting a layer of food-conducting tissue—the phloem or inner bark (also called bast). As the woody stem increa...

division, in mathematics

(Encyclopedia)division, fundamental operation in arithmetic; the inverse of multiplication. Division may be indicated by the symbol ÷, as in 15 ÷ 3, or simply by a fraction, 15/3. The number that is being divided...

canon, in Christianity

(Encyclopedia)canon, in Christianity, in the Roman Catholic Church, decrees of church councils are usually called canons; since the Council of Trent the expression has been especially reserved to dogmatic pronounce...

naturalism, in literature

(Encyclopedia)naturalism, in literature, an approach that proceeds from an analysis of reality in terms of natural forces, e.g., heredity, environment, physical drives. The chief literary theorist on naturalism was...

timothy , in botany

(Encyclopedia)timothy or herd's-grass, perennial plant (Phleum pratense) of the family Poaceae (grass family), native to Europe and W Asia and one of the most widely cultivated hay grass of North America. Adaptable...

parsnip, in botany

(Encyclopedia)parsnip, garden plant (Pastinaca sativa) of the family Umbelliferae (parsley family), native to the Old World. It has been cultivated since Roman times for its long, fleshy, edible root. Wine and beer...

memory, in psychology

(Encyclopedia)memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering: perception and regi...

motif, in literature

(Encyclopedia)motif mōtēfˈ [key], in literature, term that denotes the recurrent presence of certain character types, objects, settings, or situations in diverse genres and periods of folklore and literature. Ex...

Browse by Subject