dos

1 of 2
variants or do's

plural of do entry 2

DOS

2 of 2

noun

: 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

Dictionary Entries Near dos

Cite this Entry

“Dos.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dos. Accessed 14 Apr. 2024.

Medical Definition

dos

abbreviation
dosage

More from Merriam-Webster on dos

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