Columbia Encyclopedia

Search results

500 results found

turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Bedford, cities, United States

(Encyclopedia)Bedford. 1 City (2020 pop. 13,068), seat of Lawrence co., S Ind.; inc. 1889. Bedford limestone, quarried there and shipped all over the world, was ...

Rainbow Bridge National Monument

(Encyclopedia)Rainbow Bridge National Monument, 160 acres (65 hectares), S Utah; est. 1910. Rainbow Bridge, the largest natural bridge in the world, is a symmetrical, pink, sandstone arch, 309 ft (94 m) high, 33 ft...

acta

(Encyclopedia)acta ăkˈtə [key], official texts of ancient Rome, written or carved on stone or metal. Usually acta were texts made public, although publication was sometimes restricted. Acta were first posted or ...

Omri

(Encyclopedia)Omri ŏmˈrī [key]. 1 King of Israel. He was a general in the army of Elah, and on the king's death at the hands of Zimri (1,) Omri proclaimed himself king. Soon after this Zimri killed himself. Omri...

Bradford, city, England

(Encyclopedia)Bradford, city and metropolitan borough, N central England, on a small tributary of the Aire River. It is a center of the worsted industry, which dates ...

sod house

(Encyclopedia)sod house, house with walls made of strips of sod laid horizontally in courses like bricks. Sod houses were common in the frontier days on the western plains of the United States, where wood and stone...

Solovetski Islands

(Encyclopedia)Solovetski or Solovetsky Islands sələvyĕtˈskē [key], archipelago, c.150 sq mi (390 sq km), N European Russia, in the White Sea at the entrance of Onega Bay. A monastery, built in the first half o...

tendril

(Encyclopedia)tendril, slender, sensitive structure of many climbing plants that by a response to contact (see auxin) supports the plant. Tendrils are modified stems, leaves, or leaf parts or roots. Most young tend...

breakwater

(Encyclopedia)breakwater, offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a mole. In the Unite...