XSEM Full Form. Full Meaning of XSEM Find long form and abbreviation, slang or definition of XSEM. What does XSEM mean? What does XSEM 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.