Columbia Encyclopedia

Search results

500 results found

camouflage

(Encyclopedia)camouflage kămˈəfläzh [key], in warfare, the disguising of objects with artificial aids, especially for the purpose of making them blend into their surroundings or of deceiving the observer as to ...

airfoil

(Encyclopedia)airfoil, surface designed to develop a desired force by reaction with a fluid, especially air, that is flowing across the surface. For example, the fixed wing surfaces of an airplane produce lift, whi...

Gilded Age

(Encyclopedia)Gilded Age, a term used to describe a period in United States history—from roughly 1870 to 1900—when the wealthy elite consisted of industrialists w...

Versailles, Treaty of

(Encyclopedia)Versailles, Treaty of, any of several treaties signed in the palace of Versailles, France. For the Treaty of Versailles of 1783, which ended the American Revolution, see Paris, Treaty of, 1783. The...

London, Declaration of

(Encyclopedia)London, Declaration of, international code of maritime law, especially as related to war, proposed in 1909. The declaration grew largely out of the attempt at the second of the Hague Conferences to se...

Leadville

(Encyclopedia)Leadville lĕdˈvĭl [key], mining city (1990 pop. 2,629), alt. c.10,200 ft (3,110 m), seat of Lake co., central Colo., near the headwaters of the Arkansas River, in the Rocky Mts.; inc. 1878. Some mi...

Tours

(Encyclopedia)Tours to͞or [key], city (1990 pop. 133,403), capital of Indre-et-Loire dept., W central France, in Touraine, on the Loire River. It is a wine market and a tourist center, with metallurgical, chemical...

Douai

(Encyclopedia)Douai do͞oˈā, do͞oāˈ [key], town, Nord dept., N France, in French Flanders, on the Scarpe ...

harrow, in agriculture

(Encyclopedia)harrow, farm implement, consisting of a wooden or metal framework bearing metal disks, teeth, or sharp projecting points, called tines, which is dragged over plowed land to pulverize the clods of eart...

spear

(Encyclopedia)spear, primitive weapon consisting of a wooden shaft tipped with a sharp point, usually 8 to 9 ft (2.4–2.7 m) in length. The point may be carved from the shaft and hardened in a fire, or made from a...