Columbia Encyclopedia

(Encyclopedia) radish, herbaceous plant (Raphanus sativus) belonging to the family Cruciferae (or Brassicaceae; mustard family), with an edible, pungent root sliced in salads or used as a relish. It is thought to be...

(Encyclopedia) Sender, Ramón José rämōnˈhōsāˈsāndĕrˈ [key], 1902–82, Spanish novelist. A journalist, Sender fought on the side of the Loyalists in the Spanish civil war. He left Spain in 1938 and became...

(Encyclopedia) Characteristics of Spectral Classes for Main Sequence Stars ...

(Encyclopedia) Geneva Conventions, series of treaties signed (1864–1949) in Geneva, Switzerland, providing for humane treatment of combatants and civilians in wartime. The first convention, signed by 16 nations, c...

(Encyclopedia) gingivitis jĭnˌjəvīˈtĭs [key], inflammation of the gums. It may be acute, subacute, chronic, or recurrent. The gums usually become red, swollen, and spongy, and bleed easily. Chronic gingivitis ...

(Encyclopedia) Thorfinn Karlsefni thôrˈfĭn kärlˈsĕvnē [key], fl. 1002–15, Norse leader of an attempt to colonize North America. He appeared in Greenland in 1002 and married Gudrid, widow of one of the sons ...

(Encyclopedia)  CE5 Red mulberry, Morus rubra mulberry, common name for the Moraceae, a family of deciduous or evergreen trees and shrubs, often climbing, mostly of pantropical distribution, and characterized by ...

(Encyclopedia)  CE5 The Hertzsprung-Russell diagram shows the relation between the luminosity and surface temperature (which is related to spectral class, or color) of the stars in the Milky Way. Most stars fall a...

(Encyclopedia) salamander, an amphibian of the order Urodela, or Caudata. Salamanders have tails and small, weak limbs; superficially they resemble the unrelated lizards (which are reptiles), but they are easily dis...

(Encyclopedia) Linton, William James, 1812–97, Anglo-American wood engraver, author, and political reformer. In 1842 he began working as a wood engraver with John Orrin Smith and produced illustrations for the new...