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Definitions

dos

[daws, dos] / dɔs, dɒs /
NOUN
disk operating system
Synonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its Basic programming language and DOS operating system weren’t innovative in the market—but became standards.

From Barron's • Mar. 13, 2026

In 1987, they founded Henter-Joyce and soon released the first version of their screen reader for DOS.

From The Verge • Jul. 14, 2022

In the late 1990s, I was kindly, patiently coaxing senior colleagues off text-based DOS terminals and onto graphics-based Windows operating systems, wondering why they were resisting change that would make their jobs easier.

From Washington Post • May 26, 2022

We’d still be staring at DOS prompts on monochrome screens.

From Seattle Times • Nov. 20, 2021

Then another month to convert to something we could massage with our favorite 486 in DOS.

From Paradise Lost by Milton, John