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DOS

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(dôs, däs)

noun

an operating system that resides on a disk: term used primarily in connection with microcomputers

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

See DOS in American Heritage Dictionary 4

noun
Computer Science

An operating system that resides on a disk.

Origin:

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

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