SECTOR • DICCIONARIO INGLES.COM • Definition of Sector

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/sˈɛktər/ Listen

noun

Sector n.

(Geom.) A part of a circle comprehended between two radii and the included arc.

A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc., one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc., to any scale.

An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector.

Dip sector, an instrument used for measuring the dip of the horizon.

Sector of a sphere, or Spherical sector, the solid generated by the revolution of the sector of a circle about one of its radii, or, more rarely, about any straight line drawn in the plane of the sector through its vertex.

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Etymology of 'Sector'

Collaborative International Dictionary of English 0.48

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"Sector" Quotes from Famous Books

... at last in what they call a quiet sector. Most of the soldiers round this place is French. I understand there pretty sore at the Americans cause some of them came up here and began shootin up the Germans. Of course you cant have a decent war if nobodies goin to pay ...

— "Same old Bill, eh Mable!" • Edward Streeter

... entered and handed Jack a slip of paper. It was from the commander of their squadron, and said, in effect, that though Tom and Jack were no longer under his orders, having been duly transferred to another sector, yet he would be obliged if they would call on him, ...

— Air Service Boys in the Big Battle • Charles Amory Beach

... would send them "up the line," a group of officers was gathered in the senior major's hut for the purpose of studying in detail some photographs, secured by our aircraft, of the enemy trenches immediately opposite their own sector of the front line. They had finished their study, and were engaged in the diverting and pleasant exercise of ragging each other. The particular subject of that discussion was their various sprinting abilities, and the comparative usefulness of various kinds of funk-holes as a protection ...

— The Sky Pilot in No Man's Land • Ralph Connor

... girdle consists of a number of fabric scallops through which run strands of Italian hemp. These strands, of which there are a large number, are led towards the bottom ridge, where they are drawn together and secured to a rigging sector. To these sectors the main external rigging cables are attached. The diagram shows better than any description this ...

— British Airships, Past, Present, and Future • George Whale

... of May 30, after a day dedicated to the memory of their comrades who had fallen in the training days and in the Verdun sector, that the 5th and 6th Regiments and the 6th Machine Gun Battalion, United States marines, each received the ...

— Winning a Cause - World War Stories • John Gilbert Thompson and Inez Bigwood

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