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dos

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DOS¹

  • /diː oː ˈɛs/
  • /dɒs/
  • /dɔːs/
  • /dɑs/ Canada

Rhymes with -ɒs, -ɔːs

noun DOSes

  1. abbreviation, initialism Initialism of date of service
  2. abbreviation, initialism Initialism of date of separation
  3. Internet, abbreviation, initialism Initialism of denial of service
  4. abbreviation, initialism Initialism of density of states
  5. abbreviation, initialism Initialism of director of studies
  6. abbreviation, initialism Initialism of disk operating system
  7. abbreviation, initialism Initialism of death on scene

proper noun

  1. abbreviation, acronym, historical Acronym of Disk Operating System, a family of disk-based operating systems. Next, using your word processor or the DOS text editor, you can edit your AUTOEXEC.BAT file.
  2. US, abbreviation, initialism Initialism of Department of State

    Similar: Foggy Bottom

dos²

  • /duːz/

Rhymes with -uːz

noun do's

  1. plural plural of do With the coming of Monday arrived a new life for David—a curious life full of "don'ts" and "dos." David wondered sometimes why all the pleasant things were "don'ts" and all the unpleasant ones "dos."

dos³

  • /dəʊz/ UK
  • /doʊz/ US

Rhymes with -əʊz

noun do's

  1. plural plural of do In functional harmonic progression, three “Dos” in a row within the Do-Ti test indicate chord changes that can only be this descending third pattern.

DoS⁴

  • /diː oː ˈɛs/

Where it comes from

From denial of service.

noun DoSs · DoSes · DOS

  1. Internet A denial-of-service attack.

verb DoSes · DoSing · DoSed · DOS

  1. Internet, transitive To commit a denial-of-service attack against. In addition to out-of-spec traffic, malicious packets can contain payloads that cause a system to crash. A packet's payload is taken as input into a service. If the input is not properly checked, the application can be DoSed.

DoS⁵

noun

  1. A Director of Studies; someone who oversees the scholarly aspects of an institution, including faculty development and curriculum design.

Thesaurus

Closest in meaning: vod, ssd, ods, dss, psd, pc, ms, backs, two, dual, division, the, back, dds, bashes, doce

Translations

Every language

noun disk operating system

FrançaisDOS
ItalianoDOS
العربيةدوس

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Cite this
MLA

"dos." Wiktionary, via Micwyn, micwyn.com/word/dos. Accessed 6 Nov. 2026.

APA

dos. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/dos

Chicago

"dos." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/dos.

BibTeX
@misc{dos_2026,
  title = {dos},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/dos},
  urldate = {2026-11-06}
}