DOS
1 Americannoun
abbreviation
abbreviation
acronym
Etymology
Origin of DOS
d(isk) o(perating) s(ystem)
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Here are some do’s and don’ts to remember when using AI for performance reviews:
From The Wall Street Journal • Feb. 24, 2026
The DMA is part of the European Union's bolstered legal armoury that seeks to make the digital sphere fairer with a list of do's and don'ts for Big Tech.
From Barron's • Nov. 18, 2025
Here to break down all the do’s and don’ts of making shortcrust pastry is Bridget Vickers, senior chef-instructor at the Institute of Culinary Education’s Los Angeles campus.
From Salon • Oct. 15, 2025
The venue, on the outskirts of Shrewsbury, also features a fully restored cottage for newlyweds who get married there, as well as multiple areas where couples can say their "I do's".
From BBC • Oct. 7, 2025
After practice, everybody came over to me, doing the best they could to hold their words in but sending me all their what did you do's with their eyes.
From "Ghost" by Jason Reynolds
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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.