Columbia Encyclopedia

(Encyclopedia) Apatosaurus ăpˌətəsôrˈəs, āˌpătˌə– [key], [Gr.,=deceptive lizard], quadruped saurischian dinosaur, estimated to be from 70 to 90 ft (21 to 27 m) in length and to weigh up to 30 tons (27 ...

(Encyclopedia) woodpecker, common name for members of the Picidae, a large family of climbing birds found in most parts of the world. Woodpeckers typically have sharp, chisellike bills for pecking holes in tree trun...

(Encyclopedia) gourami go͞oräˈmē [key], tropical freshwater fish of the labyrinth fish suborder. Like other members of that suborder, gouramis have a labyrinthine breathing apparatus connected to each gill chamb...

(Encyclopedia) day, period of time for the earth to rotate once on its axis. The ordinary day, or solar day, is measured relative to the sun, being the time between successive passages of the sun over a stationary o...

(Encyclopedia) ore, metal-bearing mineral mass that can be profitably mined. Nearly all rock deposits contain some metallic minerals, but in many cases the concentration of metal is too low to justify mining the ore...

(Encyclopedia) Savannah, city (1990 pop. 137,560), seat of Chatham co., SE Ga., a port of entry on the Savannah River near its mouth; inc. 1789. A rail, fishing, and industrial center, it is a leading southern port ...

(Encyclopedia) Shetland pony, smallest breed of horse, originating in the Shetland Islands some 200 mi (322 km) N of Scotland. The Shetland resembles a miniature draft horse and has long been used for working purpos...

(Encyclopedia) Black River. 1 River rising in SE Mo. and flowing c.300 mi (480 km) SE, then SW to the White River near Newport, Ark. It is partly navigable. Clearwater Dam is on the river near Piedmont, Mo. 2 River ...

(Encyclopedia) Croton Aqueduct krōˈtən [key], 38 mi (61 km) long, SE N.Y., carrying water from the Croton River basin to New York City; built 1837–42. It was one of the earliest modern aqueducts in the United S...

(Encyclopedia) Romsdalen ro͞omsˈdälˌĕn [key], valley, c.60 mi (100 km) long, in Møre og Romsdal co., SW Norway, flanked by the mountains of Dovrefjell. It is an ancient passage from the western coast to S Norw...