SINCE 1828
dos
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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Merriam-Webster unabridged
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