dos

1 of 2

variants or do's

Synonyms of dos next

plural of do entry 2

DOS

2 of 2

noun

ˈdäs

: the operating system of a computer that can be stored on and run off of a computer disk drive

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

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dory trawler

dos

DOS

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Cite this Entry

Style

“Dos.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dos. Accessed 11 Sep. 2025.

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Medical Definition

dos

abbreviation

dosage

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dos

noun

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Medical Definition

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