Sector may refer to:

Places

Sector, West Virginia Sector is an Unincorporated area, unincorporated community in Hampshire County, West Virginia, Hampshire County in the U.S. state of West Virginia. It is located along the west bank of the Potomac River#South Branch Potomac River, South Branch Po ...

, U.S.

Geometry

Circular sector A circular sector, also known as circle sector or disk sector or simply a sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, with the smaller area being known as the ''minor ...

, the portion of a disc enclosed by two radii and a circular arc *

Hyperbolic sector A hyperbolic sector is a region (mathematics), region of the Cartesian plane bounded by a hyperbola and two ray (geometry), rays from the origin to it. For example, the two points and on the Hyperbola#Rectangular hyperbola, rectangular hyperbol ...

, a region enclosed by two radii and a hyperbolic arc *

Spherical sector In geometry, a spherical sector, also known as a spherical cone, is a portion of a sphere or of a ball defined by a conical boundary with apex at the center of the sphere. It can be described as the union of a spherical cap and the cone formed ...

, a portion of a sphere enclosed by a cone of radii from the center of the sphere

Social and economic

Business sector In economics, the business sector or corporate sector - sometimes popularly called simply "business" - is "the part of the economy made up by companies". It is a subset of the domestic economy, excluding the economic activities of general gover ...

, part of the economy which involves the trading and sale of products by companies *

Economic sector One classical breakdown of economic activity distinguishes three sectors: * Primary: involves the retrieval and production of raw materials, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the primary sect ...

, the manufacturing, finance and production of goods for consumers *

Private sector The private sector is the part of the economy which is owned by private groups, usually as a means of establishment for profit or non profit, rather than being owned by the government. Employment The private sector employs most of the workfo ...

, business activity created by private enterprise for profit *

Public sector The public sector, also called the state sector, is the part of the economy composed of both public services and public enterprises. Public sectors include the public goods and governmental services such as the military, law enforcement, pu ...

, delivers social services, infrastructure and institutions administered by government *

Voluntary sector In relation to public services, the voluntary sector is the realm of social activity undertaken by non-governmental, not for profit organizations. This sector is also called the third sector (in contrast to the public sector and the private sec ...

, a non-profit and voluntary part of an economy provided by organisations * The sector of the sector directive in

government procurement in the European Union Government procurement or public procurement is undertaken by the public authorities of the European Union (EU) and its member states in order to award contracts for public works and for the purchase of goods and services in accordance with pri ...

Computing

Cylinder-head-sector Cylinder-head-sector (CHS) is an early method for giving addresses to each physical block of data on a hard disk drive. It is a 3D-coordinate system made out of a vertical coordinate ''head'', a horizontal (or radial) coordinate ''cylinder'', an ...

, an early method for giving addresses to blocks of data on a hard drive *

Disk sector In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc. For most disks, each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs), and 2048 byt ...

, a subdivision of a track on a disk * Sector, or zone, in

portal rendering In computer-generated imagery and real-time 3D computer graphics, portal rendering is an algorithm for visibility determination. For example, consider a 3D computer game environment, which may contain many polygons, only a few of which may be v ...

* Sector/Sphere, an open source software suite *

Sector (instrument) The sector, also known as a sector rule, proportional compass, or military compass, is a major calculating instrument that was in use from the end of the sixteenth century until the nineteenth century. It is an instrument consisting of two r ...

, a historic calculating instrument

Other uses

Sector (administrative division) Sector is a name for an administrative division in some countries. It is used for: * Sectors of Bucharest * Sectors of the Democratic Republic of the Congo * Sectors of Guinea-Bissau * Sectors of Islamabad Sectors of Islamabad are administrati ...

* Sector clock *

Sector light A sector light is a man-made pilotage and position fixing aid that consists of strictly delineated horizontal angle light beams to guide water-borne traffic through a safe channel at night in reasonable visibility. Sector lights are most often ...

* Sector commander *

United States Coast Guard Sector A Sector is a shore-based operational unit of the United States Coast Guard. Each Sector is responsible for the execution of all Coast Guard missions within its Area of Responsibility (AOR), with operational support from Coast Guard United States C ...

, a shore-based unit of the U.S. Coast Guard * Sector, a fictional area of space, e.g. in the ''Foundation'' series, ''Star Wars'', ''StarCraft'', ''Warhammer 40,000'', ''Lollipop Chainsaw'' ** Sector, or galactic quadrant, regions of space in ''Star Trek'' * Sector, and

Sector No Limits Sector No Limits and Sector are Italian wristwatch and diving watch brands by homonymous company. History It was founded in 1973 by Filippo Giardiello, in Naples, Italy, then also owner of Philip Watch and later the company was established i ...

, watch brands * ''

Sector General ''Sector General'' is a series of twelve science fiction novels and various short stories (1957–1999) by the Northern Irish author James White. The series derives its name from the setting of the majority of the books, the Sector 12 General Hos ...

'', a series of science fiction novels by James White

Places

Geometry

Social and economic

Computing

Other uses

See also