1, The full form of DOS is Disk Operating System. It’s used on Computing ,Sofware & Applications in Worldwide

Disk Operating System (DOS) is a family of disk operating systems that can run on a disk storage device, such as a floppy disk or hard disk drive. The most popular DOS version is Microsoft Disk Operating System (MS-DOS).

2, The full form of DOS is Department of State. It’s used on Governmental ,Departments & Agencies in United States

Department of State (DOS) or United States Department of State, often referred to as the State Department, is the Cabinet-level foreign affairs agency of the United States government.

3, The full form of DOS is Democratic Opposition of Serbia. It’s used on Governmental ,Politics in Serbia

Democratic Opposition of Serbia (DOS) was a multi-party political alliance in Serbia.

4, The full form of DOS is Density of States. It’s used on Academic & Science ,Physics in Worldwide

Density of States (DOS) is the number of different states at a particular energy level that electrons are allowed to occupy.

5, The full form of DOS is Diversity-Oriented Synthesis. It’s used on Academic & Science ,Chemistry in Worldwide

Diversity-Oriented Synthesis (DOS) is a strategy used to create a huge diversity of small molecules with potentially useful properties.

6, The full form of DOS is Distributed Operating System. It’s used on Computing ,General Computing in Worldwide

Distributed Operating System (DOS) is an Operating System (OS) that runs on several machines whose purpose is to provide a useful set of services and make the collection of machines behave more like a single machine. DOS is an operating system designed to work in a network.