from The American Heritage® Dictionary of the English Language, 4th Edition
- A trademark for a computer operating system.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Microsoft Disk Operating System, an operating system for IBM-compatible personal computers in the 1980s and 1990s, eventually succeeded by standalone versions of Microsoft Windows.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an operating system developed by Bill Gates for personal computers
Sorry, no etymologies found.