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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

PS: if the thought of installing Windows 98 from DOS is too intimidating, you’re in luck.

From The Verge • Jul. 11, 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

Most operating systems have a text editor: DOS has edit, Windows has Notepad, MacOS has SimpleText.

From Debian GNU/Linux : Guide to Installation and Usage by Goerzen, John