d(isk) o(perating) s(ystem)
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Decart has two main business lines, the fastest-growing of which is known as the Decart Optimization Stack, or DOS.
From The Wall Street Journal • May 18, 2026
Its Basic programming language and DOS operating system weren’t innovative in the market—but became standards.
From Barron's • Mar. 13, 2026
Or 5.25-inch floppies, like some of the DOS versions did.
From The Verge • Jul. 20, 2022
In the late 1990s, I was kindly, patiently coaxing senior colleagues off text-based DOS terminals and onto graphics-based Windows operating systems, wondering why they were resisting change that would make their jobs easier.
From Washington Post • May 26, 2022
DOS hackers think EOF is ^Z, and a few Amiga hackers think it's ^\.
From The Jargon File, Version 4.2.2, 20 Aug 2000 by Steele, Guy L.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
