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uric acid

(Encyclopedia)uric acid yo͝orˈĭk [key], white, odorless, tasteless crystalline substance formed as a result of purine degradation in man, other primates, dalmatians, birds, snakes, and lizards. The last three gr...

garnet

(Encyclopedia)garnet, name applied to a group of isomorphic minerals crystallizing in the cubic system. They are used chiefly as gems and as abrasives (as in garnet paper). The garnets are double silicates; one of ...

sundial

(Encyclopedia)sundial, instrument that indicates the time of day by the shadow, cast on a surface marked to show hours or fractions of hours, of an object on which the sun's rays fall. Although any object whose sha...

bowling

(Encyclopedia)bowling, indoor sport, also called tenpins, played by rolling a ball down an alley at ten pins; for lawn bowling, see bowls. Bowling is one of the most popular participatory sports in the United State...

pavement

(Encyclopedia)pavement, the wearing surface of a road, street, or sidewalk. Parts of Babylon and Troy are believed to have been paved; Roman roads were noted for their durable stone paving. Cobblestones were common...

Transcaucasia

(Encyclopedia)Transcaucasia trănzˌkôkāˈzhə, –shə, trănsˌ– [key], transitional region between Europe and Asia, extending from the Greater Caucasus to the Turkish and Iranian borders, between the Black a...

Khakass Republic

(Encyclopedia)Khakass Republic khəkäsˈēə [key], constituent republic (1990 est. pop. 573,000) 23,900 sq mi (61,900 sq km), S central Siberian Russia, in Krasnoyarsk Territory. Abakan (the capital) and Chernogo...

Silk Road

(Encyclopedia)Silk Road, ancient overland trade route linking Asia and Europe, consisting of a network of caravan routes running from China across central Asia to the shores of the Mediterranean. Its starting point...

Paleolithic period

(Encyclopedia)Paleolithic period pāˌlēəlĭthˈĭk, –lēō–, pălˌ– [key] or Old Stone Age, the earliest period of human development and the longest phase of mankind's history. It is approximately coexten...

Revere, Paul

(Encyclopedia)Revere, Paul, 1735–1818, American silversmith and political leader in the American Revolution, b. Boston. In his father's smithy he learned to work gold and silver, and he became a leading silversmi...