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Touba

(Encyclopedia)Touba to͞oˈbä [key], town (1988 pop. 23,751), Diourbel prov., W Senegal. The terminus of a branch line from main Dakar-Niger RR, it is located in peanut-growing region. Touba is the religious cente...

parallelogram

(Encyclopedia)parallelogram, closed plane figure bounded by four line segments, or sides, with opposite pairs of sides parallel and equal in length. The rhombus, rectangle, and square are special types of parallelo...

Navajo Dam

(Encyclopedia)Navajo Dam, 402 ft (123 m) high and 3,648 ft (1,112 m) long, NW N.Mex., on the San Juan River, near the Colo. line; built 1958–63 by the U.S. Bureau of Reclamation. The dam, a major unit of the Colo...

Spuyten Duyvil Creek

(Encyclopedia)Spuyten Duyvil Creek spīˈtən dīˈvəl [key], tidal channel, now a ship canal, c.1 mi (1.6 km) long, SE N.Y., in New York City. It separates the northern tip of Manhattan island from the mainland a...

Tepic

(Encyclopedia)Tepic tāpēkˈ [key], city (1990 pop. 206,967), capital of Nayarit state, W Mexico, on the Tepic River. A commercial center on the coastal line of the Mexican National Railways and on a major highway...

Bitterroot Range

(Encyclopedia)Bitterroot Range, part of the Rocky Mts., on the Idaho-Mont. line. The main range, running northwest-southeast, includes Trapper Peak (10,175 ft/3,101 m high); Mt. Garfield (10,961 ft/3,341 m), in an ...

Ussuriysk

(Encyclopedia)Ussuriysk o͝oˌso͝orēskˈ [key], city (1989 pop. 158,000), Maritime Territory, Russian Far East, on the Suyfun River. It is a coal-mining center and a Trans-Siberian RR junction. A direct rail line...

Zillertal Alps

(Encyclopedia)Zillertal Alps tsĭlˈərtälˌ [key], range of the E Alps astride the Austro-Italian border and extending 35 mi (56 km) NE into the Tyrol. The range rises to 11,555 ft (3,522 m) in the Hockfeiler, on...

dimension, in mathematics

(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...

Cornell, Ezra

(Encyclopedia)Cornell, Ezra, 1807–74, American financier and founder of Cornell Univ., b. Westchester Landing, N.Y. Cornell, who began life as a laborer, was of an ingenious mechanical bent and had a shrewd busin...