Geometry. a plane figure bounded by two radii and the included arc of a circle.
a mathematical instrument consisting of two flat rulers hinged together at one end and bearing various scales.
Machinery. a device used in connection with an index plate, consisting of two arms rotating about the center of the plate and set to indicate the angle through which the work is indexed.
Military. a designated defense area, usually in a combat zone, within which a particular military unit operates and for which it is responsible.
Astronomy. an instrument shaped like a sector of a circle, having a variable central angle and sights along the two straight sides, for measuring the angular distance between two celestial bodies.
a distinct part, especially of society or of a nation's economy: the housing sector; the educational sector.
a section or zone, as of a city.
Computers. a portion of a larger block of storage, as 1/128 of a track or disk.
verb (used with object)
to divide into sectors.
Origin of sector
1560–70; <Late Latin: sector, Latin: cutter, equivalent to of sec(āre) to cut + -tor-tor
University leaders also fear the government is underestimating the resources needed for the sustainability of the sector.
UK Universities Predicted a COVID-19 Crash. They Got the Opposite|Fiona Zublin|September 17, 2020|Ozy
It is cliché in Silicon Valley to say the government’s technology lags far behind the private sector’s.
Democracy depends on Washington improving its tech|Adam Lashinsky|September 17, 2020|Fortune
Because the public sector has chosen not to fund it, says Davidson, and the nonprofit sector can’t fund it.
Online learning provider Everfi makes $100 million commitment for curriculum that pushes for social change|Michal Lev-Ram, writer|September 15, 2020|Fortune
In both states, wildfire emissions in 2020 have already surpassed those typically released by their power sectors over the course of an entire year.
California’s wildfires are producing more CO2 than its power plants|Tim McDonnell|September 14, 2020|Quartz
Aviation, tourism, and hospitality sectors worldwide will benefit once a vaccine is available to the public, Chen argued, so companies in such industries should provide financial support to the development and distribution of a vaccine.
When will a COVID vaccine be ready? The fourth quarter or early 2021, top Chinese vaccine executive says|Grady McGregor|September 11, 2020|Fortune
There were now five British corps in the British sector, and five American corps in the American sector.
Blood in the Sand: When James Jones Wrote a Grunt’s View of D-Day|James Jones|November 15, 2014|DAILY BEAST
This addition ultimately “reactivated” that sector of the city.
Frank Gehry Is Architecture’s Mad Genius|Sarah Moroz|October 27, 2014|DAILY BEAST
This is a problem where every sector, including governments and NGOs, need to work together on the solutions.
How Your Company Can End Violence Against Girls|Gary Cohen|October 9, 2014|DAILY BEAST
Having finally re-joined the main body of the Ukrainian forces, the beleaguered defenders of Sector D were evacuated.
Ukrainian Troops Retreat From Russian Border, Leaving 100 Kilometers Open to Invasion|Pierre Vaux|August 12, 2014|DAILY BEAST
The withdrawal from Sector D leaves several other border crossings open.
Ukrainian Troops Retreat From Russian Border, Leaving 100 Kilometers Open to Invasion|Pierre Vaux|August 12, 2014|DAILY BEAST
For a long time—in exact figures just a month, which to restless fighting men is a near eternity—the sector was quiet.
With the Doughboy in France|Edward Hungerford
He had learned at least that much of German warfare and German honor, even in the quiet Toul sector.
Tom Slade Motorcycle Dispatch Bearer|Percy Keese Fitzhugh
Probably in this sector Q, as the quartermaster-generals branch of the staff is known, was at the zenith of its efficiency.
The History of the 51st (Highland) Division 1914-1918|Frederick William Bewsher
They had served until a couple of days before as the headquarters of the German division holding the sector.
History of Ambulance Company Number 139|Various
"Sector Chief Hayes here," the voice said at last through the speaker.
Eight Keys to Eden|Mark Irvin Clifton
British Dictionary definitions for sector
sector
/ (ˈsɛktə) /
noun
a part or subdivision, esp of a society or an economythe private sector
geometryeither portion of a circle included between two radii and an arc. Area: 1/2r ²θ, where r is the radius and θ is the central angle subtended by the arc (in radians)
a measuring instrument consisting of two graduated arms hinged at one end
a part or subdivision of an area of military operations
computingthe smallest addressable portion of the track on a magnetic tape, disk, or drum store
Derived forms of sector
sectoral, adjective
Word Origin for sector
C16: from Late Latin: sector, from Latin: a cutter, from secāre to cut