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See also: dos, DOS, dós, dōs, do's, -dos, d'os, and d'ô


Etymology 1[edit]

From denial of service.

Alternative forms[edit]


DoS (plural DoSs or DoSes)

  1. (computing, Internet) A denial-of-service attack.
Derived terms[edit]


DoS (third-person singular simple present DoSes, present participle DoSing, simple past and past participle DoSed)

  1. (transitive, computing, Internet) To commit a denial-of-service attack against.
    • 2003, Jack Koziol, Intrusion Detection with Snort, Indianapolis, IN: Sams Publishing, →ISBN, page 15:
      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.

Etymology 2[edit]



  1. (teaching) Director of Studies; someone in charge of the academic side of a school including training teachers and deciding course materials.