dos

1 of 2
variants or do's
Synonyms of dosnext

plural of do entry 2

DOS

2 of 2

noun

ˈdäs How to pronounce DOS (audio)
: the operating system of a computer that can be stored on and run off of a computer disk drive

Examples of dos in a Sentence

Recent Examples on the Web
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Noun
Another was Steyn van Ark, a year older, who plays at DOS Kampen. — Daniel Taylor, New York Times, 13 Sep. 2025 As part of her entry into DOS, Allison wore permanent jewelry at Keith’s behest. — Elisabeth Garber-Paul, Rolling Stone, 25 Nov. 2025 The deal allowed Microsoft to do business around DOS with several other PC makers, leading the software to become pervasive. — Ashley Capoot,jordan Novet, CNBC, 11 May 2026 There's also a 3-inch smart screen, which can be used for system control and visual feedback, but can also run DOS games or use the onboard NPU to run basic AI. — PC Magazine, 3 Nov. 2025 See All Example Sentences for dos

Word History

Etymology

Noun

disk operating system

First Known Use

Noun

1967, in the meaning defined above

Time Traveler
The first known use of dos was in 1967

Rhymes for dos

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Browse Nearby Words

dory trawler
dos
DOS
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Cite this Entry

“Dos.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dos. Accessed 7 Jul. 2026.

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Medical Definition

dos

abbreviation
dosage

More from Merriam-Webster on dos

Thesaurus: All synonyms and antonyms for dos

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