MS DOS

or MS-DOS

[ em-es daws, -dos ]

Trademark.

1. an operating system for personal computers, originally developed by Microsoft for IBM computers.

MS-DOS

/ ɛmˈɛsˈdɒs /

noun

1. computing a type of disk operating system

Word History and Origins

Origin of MS DOS¹

C20: from M ( icro ) s ( oft ), the company that developed it, + DOS