Posted in Information Technology, Internet Slang ADIOS stands for Automated Download and Installation of Operating Systems ADIOS stands for Automatic Digital Input/Output System ADIOS stands for Angels Die in Outlaw States (motorcycle gang slogan) ADIOS stands for Approved Driving Instructors of Scotland (UK) ADIOS stands for Asian Dust Inputs to the Ocean System (study on how dust from the Gobi desert affects the oceans)