Columbia Encyclopedia

Search results

500 results found

Ambarvalia

(Encyclopedia)Ambarvalia ămbərvālˈyə [key], in Roman religion, yearly agricultural rite held at the end of May. To insure fertility and disperse evil, each farmer led members of his household and a sacrificial...

Bransfield, Edward

(Encyclopedia)Bransfield, Edward, 1795–1852, English sea captain and antarctic explorer. In 1820, Bransfield sailed from Chile to the South Shetland Islands off the N Antarctic Peninsula. After claiming King Geor...

Ahithophel

(Encyclopedia)Ahithophel əhĭthˈəfĕl [key], in the Bible, David's counselor who joined with Absalom against David. He killed himself when Absalom ignored his counsel. He may have been the grandfather of Bath-sh...

Veterans' Day

(Encyclopedia)Veterans' Day, holiday formerly observed in the United States as Armistice Day in commemoration of the signing of the Armistice ending World War I. Nov. 11 officially became Veterans' Day on May 24, 1...

bean weevil

(Encyclopedia)bean weevil, common name for a well-known cosmopolitan species of beetle (Acanthoscelides obtectus) that attacks beans and is thought to be native to the United States. It belongs to the family Bruchi...

stun gun

(Encyclopedia)stun gun, hand-held electronic device that produces a high-voltage pulse that can immobilize a person for several minutes with no permanent damage in most cases. It is powered by ordinary batteries, w...

thresher shark

(Encyclopedia)thresher shark, long-tailed, warm-water shark, genus Alopias. The upper fork of its tail is slender and sickle-shaped and is about equal in length to the rest of the body. This shark uses its tail str...

astigmatism

(Encyclopedia)astigmatism əstĭgˈmətĭzˌəm [key], type of faulty vision caused by a nonuniform curvature in the refractive surfaces—usually the cornea, less frequently the lens—of the eye. As a result, lig...

ohmmeter

(Encyclopedia)ohmmeter ōmˈmēˌtər [key], instrument used to measure the electrical resistance of a conductor. It is usually included in a single package with a voltmeter, and often an ammeter. In normal usage, ...

nail, in anatomy

(Encyclopedia)nail, in anatomy, the horny outgrowth shielding the tip of the finger and the toe in humans and most other primates. The nail consists of dead cells pushed outward by dividing cells in the root, a fol...