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Borrowing from Latin sector.



A geometric sector, to the left.

sector (plural sectors)

  1. section
  2. zone (designated area).
  3. (geometry) part of a circle, extending to the center
  4. (computing) fixed-sized unit (traditionally 512 bytes) of sequential data stored on a track of a digital medium (compare to block)
  5. (military) an area designated by boundaries within which a unit operates, and for which it is responsible
  6. (military) one of the subdivisions of a coastal frontier
  7. (science fiction) a fictional region of space designated for navigational or governance purposes.
  8. (calculation) an instrument consisting of two rulers of equal length joined by a hinge.
  9. a field of economic activity
    • 2013 June 28, Joris Luyendijk, “Our banks are out of control”, in The Guardian Weekly, volume 189, number 3, page 21:
      Seeing the British establishment struggle with the financial sector is like watching an alcoholic who still resists the idea that something drastic needs to happen for him to turn his life around. Until 2008 there was denial over what finance had become. When a series of bank failures made this impossible, there was widespread anger, leading to the public humiliation of symbolic figures.
    public sector;  private sector

Derived termsEdit

Related termsEdit


See alsoEdit




sector m (plural sectors)

  1. sector



Borrowed from Latin sector.



sector m (plural sectoren or sectors, diminutive sectortje n)

  1. sector

Derived termsEdit


Etymology 1Edit

From secō (cut, cut off) +‎ -tor.


sector m (genitive sectōris); third declension

  1. One who cuts or cuts off, cutter.
  2. A purchaser or bidder at a sale of confiscated goods. (feminine: sectrix)

Third declension.

Case Singular Plural
nominative sector sectōrēs
genitive sectōris sectōrum
dative sectōrī sectōribus
accusative sectōrem sectōrēs
ablative sectōre sectōribus
vocative sector sectōrēs

Etymology 2Edit

From sequor (follow) +‎ -tō.


sector (present infinitive sectārī, perfect active sectātus sum); first conjugation, deponent

  1. I follow continually, attend, accompany.
  2. I follow after, pursue, chase.
  3. I seek after/out
   Conjugation of sector (first conjugation, deponent)
indicative singular plural
first second third first second third
active present sector sectāris, sectāre sectātur sectāmur sectāminī sectantur
imperfect sectābar sectābāris, sectābāre sectābātur sectābāmur sectābāminī sectābantur
future sectābor sectāberis, sectābere sectābitur sectābimur sectābiminī sectābuntur
perfect sectātus + present active indicative of sum
pluperfect sectātus + imperfect active indicative of sum
future perfect sectātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present secter sectēris, sectēre sectētur sectēmur sectēminī sectentur
imperfect sectārer sectārēris, sectārēre sectārētur sectārēmur sectārēminī sectārentur
perfect sectātus + present active subjunctive of sum
pluperfect sectātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present sectāre sectāminī
future sectātor sectātor sectantor
non-finite forms active passive
present perfect future present perfect future
infinitives sectārī, sectārier1 sectātus esse sectātūrus esse
participles sectāns sectātus sectātūrus sectandus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
sectārī, sectārier1 sectandī sectandō sectandum sectātum sectātū

1The present passive infinitive in -ier is a rare poetic form which is attested for this verb.





sector m (plural sectores)

  1. Alternative form of setor



sector m (plural sectores)

  1. section.
  2. zone.
  3. branch.