DOS

[ daws, dos ]
/ dɔs, dɒs /

noun Computers.

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

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Origin of DOS

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

Definition for DOS (2 of 3)

Definition for DOS (3 of 3)

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

Computers. denial-of-service: DoS protection for web servers.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for DOS

British Dictionary definitions for DOS

DOS
/ (dɒs) /

n acronym for trademark computing

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