The meaning of the Acronym DOS is...

DOS is

• Defunct Operating System
• Difficult Operating System
• Disk Opening System
• Dense Operating System
• Dumb Operating System
• Dirty Operating System
• Dinosaur Operating System
• Dead Operating System

More Meanings For DOS:

• Denial Of Service
• DOS related file (Win95)
• External command file (1st Reader)
• Declaration Of Support
• Disk Operating System
• Denial of Service
• Denial Of Service
• Disk Operating System
• Disk Operating System
• Autodesk Comprehensive Education Solution
• Dual Operating System
• Data Over Signal
• Degrees Of Separation
• Di-Octyl Sebacate
• Density Of States

DOS is also in:

• Astronomy
• Chemistry
• Drivers
• Electronics
• File Extensions
• General
• Networking
• Software
• Telecom