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