dos
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variants:
or do's
Definition of dos
(Entry 1 of 2)
plural of do entry 2
DOS
noun\ ˈdäs 
\
\Definition of DOS (Entry 2 of 2)
: the operating system of a computer that can be stored on and run off of a computer disk drive
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Time Traveler for dos
The first known use of dos was in 1967
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