|Noun||1.||DoS - the federal department in the UnitedStates that sets and maintains foreign policies; "the Department of State was created in 1789"|
|2.||DOS - an operating system that is on a disk|
Synonyms: disk operating system
|(operating system)||DOS - 1. The common abbreviation for MS-DOS.|
2. IBM's Disk Operating System.
3. Any disk operating system.