DOS

[ daws, dos ]
See synonyms for DOS on Thesaurus.com
nounComputers.
  1. any of several single-user, command-driven operating systems for personal computers, especially MS DOS.

Origin of DOS

1
d(isk)o(perating)s(ystem)

Words Nearby DOS

Other definitions for DOS (2 of 3)

DOS

abbreviation

Other definitions for DoS (3 of 3)

DoS
[ daws, dos, dee-oh-es ]

abbreviation
  1. Computers. denial-of-service: DoS protection for web servers.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use DOS in a sentence

  • At the end of the stone bridge, at the ponte DOS tres pontes, next to Recife, the guards are more numerous and strict.

  • "Keep cool, Wes," MacHenery whispered to his opponent as they DOS-à-doed back into position.

    The Great Potlatch Riots | Allen Kim Lang
  • His brother Lawrence having fallen ill of consumption, Washington went with him to Barba-DOS, where he had an attack of smallpox.

    The Story of the Thirteen Colonies | H. A. (Hlne Adeline) Guerber
  • The "DOS Estrellas" Mine is yet another example of this successful district.

    Mexico | Charles Reginald Enock
  • There are very few lakes in Brazil, and only one worth speaking of—the Lagoa DOS Platos—which is 150 miles long.

    Martin Rattler | R.M. Ballantyne

British Dictionary definitions for DOS

DOS

/ (dɒs) /


n acronym fortrademark computing
  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