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