dos

1 of 2

variants or do's

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

Examples of dos in a Sentence

Recent Examples on the Web

Noun

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

Microsoft then licensed this operating system to IBM as PC-DOS while retaining the ability to sell the operating system to other companies. — Andrew Cunningham, ArsTechnica, 30 Apr. 2026

La Habra, 25-21, 25-18 DOS PUEBLOS TOURNAMENT Canyon/Canyon Country def. — Ocvarsity Sports Staff, Oc Register, 14 Mar. 2026

In November 1985, the company launched Windows, a graphical operating environment layered on top of its operating system MS-DOS, which is primitive by modern standards, but radical for its time. — Catherina Gioino, Fortune, 13 Mar. 2026

Word History

Etymology

Noun

disk operating system

First Known Use

Noun

1967, in the meaning defined above

Rhymes for dos

• blas
• bos
• boss
• bosse
• clos
• crosse
• doss
• dross
• floss
• foss
• fosse
• gloss

Medical Definition

dos

abbreviation

dosage