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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



... Croix de Guerre for the families of the men I lost on my last trip," he explained, and he added: "It's a good thing you're here to go along with us for protection. There are lots of Boches in this sector." ...
— Flying for France • James R. McConnell
... Cumjnj sector Laconice lunae. Coruus aquat. Ne incalceatus in montes. Domj Milesia Sacra hec non aliter constant. Gallus insistit Leonis vestigia quaeris (ostentation with couardize) fumos vendere Epiphillides. Calidum mendacium optimum Solus Currens ...
— Bacon is Shake-Speare • Sir Edwin Durning-Lawrence


Words linked to "Sector" :   field, measuring system, arc, plane figure, field of battle, society, tract, aspect, field of honor, social group, business, measuring instrument, armed services, parcel, piece of land, military, armed forces, measuring device, economy, allocation unit, facet


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