SECTOR • FREE TRANSLATOR.ORG • 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

... 1.—"C" Company moved to Taylor's Hollow. 2.—"D" Company moved to Taylor's Hollow. 3.—13th Battalion took over sector. 28th Battalion concentrated in Taylor's Hollow as Divisional Reserve. For next five weeks main body engaged on works and Beach fatigues. 12.—Moved to Happy Valley as support to 26th Battalion. Thus rejoined 2nd Division. 13.—Visit of Lord ...

— The 28th: A Record of War Service in the Australian Imperial Force, 1915-19, Vol. I • Herbert Brayley Collett

... me by the mail orderly—I was on the Verdun sector then—on the morning of the Fourth of July. Remember the date the letter was written because of the quick time it made. Most of our mail took from six weeks to eternity. What are you smiling ...

— The Million-Dollar Suitcase • Alice MacGowan

... was in the Baccarat sector, I met a most interesting and effective man who was in the Supply Department of the "Y" on week days, and conducted services in outlying camps every Sunday morning with great success. He had been a circus acrobat back in the States. What a revolutionizing influence war is, with preachers ...

— The Fight for the Argonne - Personal Experiences of a 'Y' Man • William Benjamin West

... sharpened into an index, and moves to an extent corresponding to the pressure applied to the tube; but in the more recent forms of this apparatus, a dial and a hand, like those of a clock, are employed, and the hand is moved round by a toothed sector connected to the tube, and which sector acts on a pinion attached to the hand. Mr. Shank, of Paisley, has lately introduced a form of steam gauge like a thermometer, with a flattened bulb; and the pressure of the steam, by compressing the bulb, causes the mercury to rise to ...

— A Catechism of the Steam Engine • John Bourne

... — N. part, portion; dose; item, particular; aught, any; division, ward; subdivision, section; chapter, clause, count, paragraph, verse; article, passage; sector, segment; fraction, fragment; cantle, frustum; detachment, parcel. piece[Fr], lump, bit cut, cutting; chip, chunk, collop[obs3], slice, scale; lamina &c. 204; small part; morsel, particle &c. (smallness) 32; installment, dividend; share &c. (allotment) 786. debris, odds and ends, oddments, detritus; ...

— Roget's Thesaurus

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