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