sector (redirected from Sectoral)

sector

The smallest unit of storage read or written on a disk. See magnetic disk.

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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

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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.