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