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Sector   Listen
noun
Sector  n.  
1.
(Geom.) A part of a circle comprehended between two radii and the included arc.
2.
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.
3.
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.






Collaborative International Dictionary of English 0.48








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"Sector" Quotes from Famous Books



... 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

... Forces in France, "on the 23rd, by a splendid night attack, the Australians took the greater portion of Pozieres." The previous bombardment had been magnificent. "I had never before seen such a spectacle. A large sector of the horizon was lit up not by single flashes, but by a continuous band of quivering light." And under the protection of the guns, the Anzacs swept forward, passing over trenches, so entirely obliterated ...
— The War on All Fronts: England's Effort - Letters to an American Friend • Mrs. Humphry Ward

... the roar streaked with stridence of the artillery duel in progress on the nearest sector of the Front. ...
— The Rough Road • William John Locke

... Military Architecture, practised and designed by the latest and most experienced Engineers of this last Age, Italian, French, Dutch and English; and the manner of Defending and Besieging Forts and Places; with the use of a Joynt Ruler or Sector, for the speedy description of any Fortification; by Sir ...
— The accomplisht cook - or, The art & mystery of cookery • Robert May

... German Foreign Office, who had accompanied me, informed me that the Chancellor had telephoned all the Generals in the vicinity to ask permission for me to visit the lines but that not one of them would permit me to visit his sector. This was a fairly certain indication that sooner or later the hate for America must lead to war or that the U-boat settlement made at the time was only a stop gap until the increased number of submarines would enable Germany to commence ...
— Face to Face with Kaiserism • James W. Gerard

... necessary to make the fourth station operative. Such a condition is shown in Fig. 193, it being assumed that the subscriber at Station C originated the call and pressed his own button so as to prevent his sector from being moved out of its normal position. As a result of this, the talking circuit at Station C is left closed, and the talking and the ringing circuit of Station D, the called station, are closed, while both the talking and the ...
— Cyclopedia of Telephony & Telegraphy Vol. 1 - A General Reference Work on Telephony, etc. etc. • Kempster Miller

... into Harrington's eye. He puffed slowly at his pipe and slid a piece from the center toward the sector of the board nearest him. Blount whistled softly ...
— Uller Uprising • Henry Beam Piper, John D. Clark and John F. Carr

... eager for a little talk between themselves. That staggering fact had appalled, as well as angered, him. Why should their particular plane have been selected for such treacherous work, among all the scores connected with the air service in that sector of the ...
— Air Service Boys Over the Atlantic • Charles Amory Beach

... trenches were in excellent positions, but were occupied by only a comparatively few soldiers; it was the German plan to keep large bodies of troops in reserve, so that they might be sent to any sector where the need seemed most likely. They have asserted they had only four battalions in the front line here; but that statement is ...
— The Story of the Great War, Volume V (of 12) - Neuve Chapelle, Battle of Ypres, Przemysl, Mazurian Lakes • Francis J. Reynolds, Allen L. Churchill, and Francis Trevelyan

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

... method was to carry as many as his hands would hold to a pile on the beach and go back for more; and in the six years of his stone-throwing he had found and thrown at the sharks every stone as small as his fist, within a sector formed by the beach and the rocky wall to an equal distance inland. The fruits, nuts, edible roots, and grasses growing in this area had hitherto supported him, but would no longer, owing to a drought of the previous year, which, luckily, ...
— "Where Angels Fear to Tread" and Other Stories of the Sea • Morgan Robertson

... high explosives tear deeper into this ulcered area. During heavy bombardment and attacks I have seen shells falling like rain. The countless towers of smoke remind one of Gustave Dore's picture of the fiery tombs of the arch-heretics in Dante's "Hell." A smoky pall covers the sector under fire, rising so high that at a height of one thousand feet one is enveloped in its mist-like fumes. Now and then monster projectiles hurtling through the air close by leave one's plane rocking violently in their wake. Airplanes have been ...
— Aircraft and Submarines - The Story of the Invention, Development, and Present-Day - Uses of War's Newest Weapons • Willis J. Abbot

... him, was a prince excellently learned, and had the patient and subtle wit of a schoolman, insomuch as in common speech (which leaves no virtue untaxed) he was called Cymini Sector, a carver or a divider of cummin seed, which is one of the least seeds. Such a patience he had and settled spirit to enter into the least and most exact differences of causes, a fruit no doubt of the exceeding tranquillity and serenity of his mind, which being no ways charged or encumbered, either ...
— The Advancement of Learning • Francis Bacon

... and companies took their turn in the front line, and before the end of February the Canadian Division was holding its own sector of ...
— From the St. Lawrence to the Yser with the 1st Canadian brigade • Frederic C. Curry

... oil and natural gas sector forms the backbone of the economy. Algeria depends on hydrocarbons for nearly all of its export receipts, about 30% of government revenues, and nearly 25% of GDP. In 1973-74 the sharp increase in oil prices led to a booming economy and helped to finance an ambitious ...
— The 1992 CIA World Factbook • United States. Central Intelligence Agency.

... Lierre-St. Catherine-Waelhem sector, against which the Germans at first focussed their attack, were impressive and awesome beyond description. Against a livid sky rose pillars of smoke from burning villages. The air was filled with shrieking shell and bursting shrapnel. The deep-mouthed roar of the guns in the ...
— Fighting in Flanders • E. Alexander Powell

... whatever might be down there would be hidden with sea growths. Suppose ten of us start out in a semi-circle from about here and go as far as this point, heading inland. Video-cameras here and here ... comb the whole sector inch by inch if we have to. After all, we have plenty of ...
— Key Out of Time • Andre Alice Norton

... and battered houses stood out almost all the time against one continuous band of flickering light along the eastern skyline. Most of it was far away to the east of our part of the battlefield—in some French or British sector on the far right. There must have been fierce fire upon Pozieres, too, for the Germans were replying to it, hailing the roads with shrapnel and trying to fill the hollows with gas shell. They must have suspected an attack upon this part of their line as well, and ...
— Letters from France • C. E. W. Bean

... sector of non-tidal navigable water cutting right across England from east to west, and that in what used to be the most productive and is still the most fertile portion of the island, is the chief factor in the historic importance ...
— The Historic Thames • Hilaire Belloc

... delegates from the ranks. Thus enlisted personnel, by devious means, were ordered to Paris under one guise or another. One sergeant came under orders which stated that he was the bearer of important documents. He carried a despatch case wadded with waste paper. Another non-com., from a distant S.O.S. sector, had orders to report to Paris and obtain a supply of rat poison. Several wagoners, farriers, and buck privates acquired diseases of so peculiar a character that only Parisian physicians could treat them. As one of them said, he hadn't had so ...
— The Story of The American Legion • George Seay Wheat

... sector I was on is really quite advanced, for an electro-chemical civilization. That weapon I brought back with me—that solid-missile projector—is typical of most Fourth Level culture. Moving parts machined to the closest tolerances, and interchangeable with similar parts ...
— Police Operation • H. Beam Piper

... mines but occasionally for pumping water into a reservoir to supply a waterwheel. It was arranged with a vertical steam cylinder located beneath one end of a large pivoted working beam and a vertical plunger-type pump beneath the other end. Heavy, flat chains were secured to a sector at each end of the working beam and to the engine and pump piston rods in such a way that the rods were always tangent to a circle whose center was at the beam pivot. The weight of the reciprocating ...
— Kinematics of Mechanisms from the Time of Watt • Eugene S. Ferguson

... sector from Rheims to Flanders was most familiar to the public. The world still thinks of the battle of the Marne as an affair at the door of Paris, though the heaviest fighting was from Vitry- le-Francois eastward and the ...
— My Year of the War • Frederick Palmer

... the British Army stationed "Somewhere in France" and had just arrived at our rest billets, after a weary march from the front line sector. ...
— Defenders of Democracy • Militia of Mercy

... sector. February: Givenchy sector. March: Souchez sector. April: " " May: " " June: Carency sector. July: Somme and Battle of Delville Wood. August: Somme, in support. September: Hebuterne sector. October: ...
— The 23rd (Service) Battalion Royal Fusiliers (First Sportsman's) - A Record of its Services in the Great War, 1914-1919 • Fred W. Ward

... Longstreet afterward assaulted. Its chief defect was due to the situation and the contour of the ground around, which made its position so prominent a salient in the lines that the flanking fire was necessarily imperfect, leaving a considerable sector without fire beyond the angle of the northwest bastion. The point of the bastion was truncated, and a single gun put in the pan coupe. The three other forts were less elaborate but ...
— Military Reminiscences of the Civil War V2 • Jacob Dolson Cox

... a motor broke the near-by stillness, while the great guns boomed in the distance. The sudden activity on the front must portend some important movement, or why should so many flying machines be drawn toward this sector? ...
— Ruth Fielding at the War Front - or, The Hunt for the Lost Soldier • Alice B. Emerson

... Orry, because the Boches downed you right over our front trench at this angle, which is nearer the Boche line than anywhere in this sector. We didn't even know that the enemy had dug a covered trench to the far side of the bluff on the river bank until you let us know by dropping bombs on them. This so angered them that they dragged out two Archies and peppered ...
— Our Pilots in the Air • Captain William B. Perry

... the latter's executors. In 1721 he got a transit instrument, and in 1726 a mural quadrant by Graham. His successor in 1742, Bradley, replaced this by a fine brass quadrant, eight feet radius, by Bird; and Bradley's zenith sector was purchased for the observatory. An instrument like this, specially designed for zenith stars, is capable of greater rigidity than a more universal instrument; and there is no trouble with refraction ...
— History of Astronomy • George Forbes

... taken direct to the City Club. Here the Commission was entertained by Robert Lewthwaite, the head of the great wine firm of Heidsick & Company. At this luncheon we met Col. Tautot, chief of staff under General Lanquelot, commander in the Reims sector. Col. Tautot represented his superior, who could not be present, probably because of more important engagements with the Germans. We also met Captain Talamon, a staff officer, and Jacques Regnier, sub-prefect of the Reims district. Col. Tautot had been invested with ...
— A Journey Through France in War Time • Joseph G. Butler, Jr.

... more bad news,—the Germans have started another one of those offensives. I was afraid they were getting ready for it. West of Verdun this time. And George may be in that sector, for all I know. How is this thing going to end, Jonathan? That damned military machine of theirs seems invincible—it keeps grinding on. Are we going to be able to stem the tide, or to help stem it with a lot of raw youths. They've only ...
— The Crossing • Winston Churchill



Words linked to "Sector" :   field of battle, sphere, war machine, social group, military, field of honor, parcel, piece of ground, parcel of land, economic system, field, society, aspect, armed forces, measuring instrument, measuring system, economy, armed services, block, tract, piece of land, two-dimensional figure, black economy, battlefield



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