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