SUM means Single User Monitor

        What does SUM stand for? Abbreviation of SUM, definition of SUM, Explanation of SUM, Full forms of short form SUM.

         We are providing world largest and most comprehensive acronyms, abbreviations directory and search engine for acronyms on the Internet. Abbreviations Finder contains more than 7 million abbreviations and acronyms. You can also search for more than 740,000 general Comprehensive words.