Columbia Encyclopedia

Search results

500 results found

Dundas

(Encyclopedia)Dundas dŭnˈdəs [key], town, S Ont., Canada. It is a suburb of Hamilton and is at the head ...

stream

(Encyclopedia)stream, general term applied to all bodies of water flowing in channels regardless of their size. See river; flood. ...

Peebles, town, Scotland

(Encyclopedia)Peebles pēˈbəlz [key], town (1991 pop. 6,750), Scottish Borders, S Scotland, at the confluence of Eddleston Water and the Tweed River. It is a mountain resort and a farm market with woolen mills. R...

nitrous oxide

(Encyclopedia)nitrous oxide or nitrogen (I) oxide, chemical compound, N2O, a colorless gas with a sweetish taste and odor. Its density is 1.977 grams per liter at STP. It is soluble in water, alcohol, ether, and ot...

avocet

(Encyclopedia)avocet ăvˈəsĕt [key], common name for a long-legged wading bird about 15 to 18 in. (37.5–45 cm) long, related to the snipe and belonging to the same family as the stilt. The American avocet or b...

rudder

(Encyclopedia)rudder, mechanism for steering an airplane or a ship. In ships it is a flat-surfaced structure hinged to the stern and controlled by a helm. When the ship is on a straight course, the rudder is in lin...

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...

darter, bird

(Encyclopedia)darter or anhinga ănhĭngˈgə [key], common name for a very slender, black water bird very closely related to the cormorant. It frequents the wooded borders of freshwater lakes, rivers, and swamps i...

parcel post

(Encyclopedia)parcel post, sending of packages through the mail service. At the congress of the Universal Postal Union in Paris in 1878, an international parcel-post system was established. The British parcel-post ...

annual rings

(Encyclopedia)annual rings, the growth layers of wood that are produced each year in the stems and roots of trees and shrubs. In climates with well-marked alternations of seasons (either cold and warm or wet and dr...