sector

1. Geometry either portion of a circle included between two radii and an arc. Area: ½r²θ, where r is the radius and θ is the central angle subtended by the arc (in radians)

2. a measuring instrument consisting of two graduated arms hinged at one end

3. Computing the smallest addressable portion of the track on a magnetic tape, disk, or drum store

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

sector

[′sek·tər]

(computer science)

A portion of a track on a magnetic disk or a band on a magnetic drum.

A unit of data stored in such a portion.

(civil engineering)

A clearly defined area or airspace designated for a particular purpose.

(electromagnetism)

Coverage of a radar as measured in azimuth.

(mathematics)

A portion of a circle bounded by two radii and an arc joining their end points.

(meteorology)

Something resembling the sector of a circle, as a warm sector between the warm and cold fronts of a cyclone.

sector

The smallest unit of data that is written to and read from a storage drive. The initial hard disk sector sizes were 128 and 256 bytes long but were later increased to 512. Eventually, sectors were enlarged to the "Advanced Format" size of 4,096 bytes. See cluster, sector interleave and magnetic disk.

Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Sector

(1) A sector in the plane is a region bounded by two rays issuing from an interior point of a figure and by an arc of its boundary cut off by these rays. In particular, a sector of a circle is bounded by two radii and an arc cut off by the radii. The area of a sector of a circle is equal to lr/2 or πr²α /360, where l is the length of the arc, α is the central angle (in degrees) subtended by the arc, and r is the radius of the circle.

(2) A sector in space is the part of a solid bounded by a conical surface whose vertex is in the solid and by the part of the solid’s surface cut off by the conical surface. A spherical sector is an example of a sector in space.

Mentioned in

References in periodicals archive

This paper aims to determine the changes in the purchasing power of the agriculture sector via DFDTOT index within the trade liberalization process in Turkey.

Effects of trade liberalization on the welfare of the agriculture sector via double factoral domestic terms of trade in Turkey: 1990-2010

The study also found that the 860,000 Saudis employed during the period before 2000 were hired in the following sectors: 39,100 in the construction sector, 28,500 in the financial services sector, 55,000 in the real estate business, 10,300 in the hotels and restaurants sector, 63,500 in downstream industries, 189,800 in retail and wholesale sectors, 150,600 in the transport, storage and communication sectors, 78,500 in the mining and electricity sectors, 54,100 in the gas and water sectors, and finally 189,000 Saudis were employed in the agriculture, fishing and forestry sectors.

Saudi govt spends SR 3.6 m on every Saudi employed in 10 years

He said the value-added textile sector pays huge taxes to the government, adding that this sector's share in the country's overall revenue accumulation is also significant.

Value-added textile sector seeks role in SBP initiatives

Charles Logan, Director at Hays, said: "These findings highlight that workers believe they cannot move between sectors and that employers aren't always able to understand or give credence to transferable skills.

Hays reports tunnel vision trapping workers and hindering growth

- Over a third (37%) of private sector workers feel they get better support from management, compared to just a 22% in the public sector.

Hays reports employees remain proud to work in private sector despite stress

Deolalkar (2003) observed that priority sector lending is not such a burden on banks.

Lending to priority sector in India: a study of public and private banks

It is difficult to manage the export sector organization by export practitioners due to lack of time and managerial knowledge.

Export sector management: Need and importance

On the first day of the auction, the 444.44 square yards residential plot 201, in Sector G-10/2 was sold for after receiving a bid of Rs85,000 per square yard Plot 202 in Sector G-10/2 measuring 444.44 sq yds received a bid of Rs84,000 per sqyd, despite the fact that it is adjacent to plot 201.

CDA auctions 25 plots for a billion rupees

Mr Olebile said President Dr Mokgweetsi Masisi had pronounced the importance of the agriculture sector hence the need for it to be supported.

Time for agriculture to come of age

In this sector 8 firms are cataloged at PSX with the paid up capital of Rs23,144.20 million.

PSX: Sectoral analysis

The cell, headed by the Executive Director of NAVTTC, would comprise of a director and four deputy directors, which is mandated to ensure proactive liaison with the private sector partners, said a press release on Monday.

NAVTTC constitutes private sector engagement cell