WW1 Full Form. Full Meaning of WW1 Find long form and abbreviation, slang or definition of WW1. What does WW1 mean? What does WW1 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.