Columbia Encyclopedia

Search results

500 results found

calculus of variations

(Encyclopedia)calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the variables themselves, a...

Beaufort scale

(Encyclopedia)Beaufort scale, a scale of wind velocity devised (c.1805) by Admiral Sir Francis Beaufort of the British navy. An adaptation of Beaufort's scale is used by the U.S. National Weather Service; it employ...

verbena

(Encyclopedia)CE5 Hoary vervain, Verbena stricta verbena, common name for some members of the Verbenaceae, a family of herbs, shrubs, and trees (often climbing forms) of warmer regions of the world. Well-known ...

basilica

(Encyclopedia)CE5 Floor plan of a basilica basilica bəsĭlˈĭkə [key], large building erected by the Romans for transacting business and disposing of legal matters. Rectangular in form with a roofed hall, th...

barberry

(Encyclopedia)CE5 Barberry, Berberis vulgaris barberry bärˈbĕrˌē [key], common name for the family Berberidaceae, and specifically for the spiny barberries (Berberis species). The family includes perennial...

bagpipe

(Encyclopedia)CE5 Scottish bagpipe bagpipe, musical instrument whose ancient origin was probably in Mesopotamia from which it was carried east and west by Celtic migrations. It was used in ancient Greece and Ro...

proline

(Encyclopedia)CE5 proline prōˈlēn [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer appears in mammalian protein. It is not essential to the human d...

photographic processing

(Encyclopedia)photographic processing, set of procedures by which the latent, or invisible, image produced when a photographic film is exposed to light is made into a permanent visible image. The negative may b...

set, in mathematics

(Encyclopedia)CE5 Union and intersection of sets A and B: The union of A and B, A∪B, contains all members belonging to either A or B. The intersection of A and B, A∩B, contains all members common to both A a...

écarté

(Encyclopedia)écarté āˌkärtāˈ [key], card game similar to euchre, played by two persons. The pack has 32 cards, seven through ace in each suit; the king is the highest card, and the ace ranks below the jack ...