S2M Full Form. Full Meaning of S2M Find long form and abbreviation, slang or definition of S2M. What does S2M mean? What does S2M stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.