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Synonyms

DOS

1 American  

abbreviation

  1. Department of State.


DOS 2 American  
[daws, dos] / dɔs, dɒs /

noun

Computers.
  1. any of several single-user, command-driven operating systems for personal computers, especially MS DOS.


DoS 3 American  
[daws, dos, dee-oh-es] / dɔs, dɒs, ˈdiˌoʊˈɛs /

abbreviation

  1. Computers.  denial-of-service.

    DoS protection for web servers.


DOS British  
/ dɒs /

acronym

  1. disk-operating system, often prefixed, as in MS-DOS and PC-DOS; a computer operating system

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of DOS

d(isk) o(perating) s(ystem)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Back in 1999, the government launched DoS attacks against foreign websites associated with Falun Gong, a spiritual movement banned in China.

From Scientific American

Both carriers are vulnerable to a "voice DoS," shutting down a conversation mid-call with a flood of signal bearers.

From The Verge

DoS attacks over Tor are easier to perpetrate than on the “clearweb”, largely because there just isn’t the same level of bandwidth on Tor.

From Forbes

Arbor Networks, a private firm that tracks cybersecurity threats, said that in just the past day, France has suffered over 1,070 DoS problems with its websites, The Associated Press reports.

From Newsweek

From the logs, some have suggested that the DoS attack, as detailed above, was responsible for "de-anonymising" users of the site.

From BBC