English Wikipedia has an article on:

sector

Wikipedia

English Wikipedia has an article on:

sector (instrument)

Wikipedia

English Wikipedia has an article on:

sector (Star Trek)

Wikipedia

Borrowed from Latin sector.

• (US) enPR: sĕk'tər, IPA^(key): /ˈsɛk.təɹ/
• (Ireland) IPA^(key): /ˈsɛk.tɚ/
  • (Ireland) IPA^(key): /ˈsɛk.tɐ/, /ˈsɛk.tɚ/

• Audio (Southern England):

  (file)

• (Indic) IPA^(key): /ˈsɛktə(r)/; /sɛk.tɔ(r)/, (father-bother merger) /sɛk.tɑ(r)/
• Rhymes: -ɛktə(ɹ)

sector (plural sectors)

1. A section. (Can we add an example for this sense?)
2. (aviation) In the schedule for an aircraft and its crew, the period starting with preparation of the plane before loading at one airport and ending with deplaning at the next.

   Synonym: leg

3. A zone; a designated area.
   1. (military) An area designated by boundaries within which a unit operates, and for which it is responsible.
   2. (military) One of the subdivisions of a coastal frontier.
   3. (science fiction) a fictional region of space designated for navigational or governance purposes.
   4. (micronationalism) A community or subculture within the wider intermicronational community.
      • 2002 April 24, Kaiser Mors I, “Imperial Decree #13: Sectors.”, in Imperial Republic of Shireroth forums‎^[1], archived from the original on 12 September 2024:

        Shireroth shall not recognize the use of Sectors^[sic] as a micronational geographic or cultural subdivision. Nor shall it reside in any sector. Nor shall any duchy or territory be considered a part of ANY sector unless the Duchy or Territory expressly grants permision^[sic] to be considered in such sector.

      • 2006 December 12, Sepatarist, “CIS Disscussion”, in Micronational Cartography Society‎^[2], archived from the original on 12 September 2024:

        I'll also provide a list of all active citizens, I understand that in the past this has been hard due to lack of updates of the necessary links but as someone said not so long ago the CIS sector is in more of a flux than other sectors - bar Lovely 😉

      • 2009 July 16, claudre [Claudio de Castro], “Micronations with names of Macronations”, in List of Micronations Forum‎^[3]:

        What are your opinions about this practice? Does it have a parallel outside the lusophone sector? Do you know of other stories other than YUGA? Does this mean micronationalism is changing? Is it good, bad, or irrelevant?

      • 2012 September 29, H.A Gov, “Re: University of Directus Releases Historic Study”, in Micras forums‎^[4]:

        Very interesting read. Love it, and very inspiring. I hope this will be good for nations. I am planning in a thing like this for the MicroWiki sector, and MicroWikia sector, so this is a good model.

      • 2021 March 13, “Leaving For Greener Pastures”, in r/micronations‎^[5], Reddit:

        This is not a sector where micronations come together, it is a cesspool where the most toxic elements of micronationalism gather to engage in drama. I plan on having much stricter rules than this sector and several people to report abuse or immature activity to, rather than just the shoddy rules and rule enforcement and one semi-active admin here.

4. (geometry) Part of a circle, extending to the center; circular sector.
5. (geometry) A portion of a sphere or ball defined by a conical boundary with apex at the center of the sphere.
6. (computer hardware) A fixed-sized unit (traditionally 512 bytes) of sequential data stored on a track of a digital medium.

   Coordinate term: block

7. (calculation) An instrument consisting of two rulers of equal length joined by a hinge.
8. 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

9. (engineering) A toothed gear whose face is the arc of a circle.
10. (motor racing) A fixed, continuous section of the track, such that sectors do not overlap but all sectors make up the whole track.
11. (climbing) An area of a crag, consisting of various routes

• sect
• section
• segment

• area of influence
• boot block
• zone of action

• torces, c-store, corset, rectos, scoter, Tresco, recost, Cortes, Coster, Ectors, Certos, scrote, escort, coster

Learned borrowing from Latin sectōrem.

• IPA^(key): (Central, Balearic) [səkˈto]
• IPA^(key): (Valencia) [sekˈtoɾ]

• Audio (Barcelona):

  (file)

sector m (plural sectors)

1. sector, section

• sectorial

• “sector”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007

Borrowed from Latin sector.

• IPA^(key): /ˈsɛk.tɔr/

• Audio:

  (file)

• Hyphenation: sec‧tor
• Rhymes: -ɛktɔr

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

1. sector

• → Indonesian: sektor

From secō (“cut, cut off”) +‎ -tor.

sector m (genitive sectōris, feminine sectrīx); third declension

2. cutter (one who cuts or cuts off)
3. purchaser or bidder (someone who buys or attempts to buy at a sale of confiscated goods)

Third-declension noun.

From sequor (“follow”) +‎ -tō.

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

2. to follow continually, attend, accompany
3. to follow after, pursue, chase
4. to seek after/out

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

• “sector”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “sector”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• "sector", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “sector”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• “sector”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
• Langenscheidt Pocket Latin Dictionary

• Hyphenation: sec‧tor

sector m (plural sectores)

1. (Portugal) alternative form of setor

• “sector”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “sector”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Borrowed from French secteur, from Latin sector.

sector n (plural sectoare)

1. sector

From Latin sector.

• IPA^(key): /seɡˈtoɾ/ [seɣ̞ˈt̪oɾ]
• Rhymes: -oɾ
• Syllabification: sec‧tor

sector m (plural sectores)

1. section
2. zone
3. branch

• “sector”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025