Sector may refer to:

Places

Geometry

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

, the portion of a disc enclosed by two radii and a circular arc * Hyperbolic sector, a region enclosed by two radii and a hyperbolic arc * Spherical sector, 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 gove ...

, 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-material commodities, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the p ...

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

Private sector The private sector is the part of the economy, sometimes referred to as the citizen sector, 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 ...

, 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, in ...

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

Voluntary sector The voluntary sector, independent sector, or civic sector is the realm of social activity undertaken by organizations that are non-governmental nonprofit organizations. This sector is also called the third sector, community sector, and nonprofit ...

, 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

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. Each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs) and 2048 bytes for CD-ROMs and ...

, a subdivision of a track on a disk * Sector, or zone, in portal rendering * Sector/Sphere, an open source software suite * Sector (instrument), a historic calculating instrument

Other uses

* Sector (country subdivision) * United States Coast Guard Sector, 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, watch brands

Places

Geometry

Social and economic

Computing

Other uses

See also