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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

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

From Seattle Times • Nov. 20, 2021

Though Kreuk left the group and later stated she had “never experienced any illegal or nefarious activity,” Mack stayed on and eventually became a high-ranking leader of an all-women subgroup called DOS.

From Washington Post • Jun. 30, 2021

While early DOS computer users tended to understand a lot about how their computers stored information and launched programs, later operating systems such as Windows 95 put more barriers in place.

From Open Source Democracy by Rushkoff, Douglas