Posted in Dictionary, Engineering, Internet Slang A3I stands for Accelerated Architecture Acquisition Initiative A3I stands for Any 3 Initials (band) A3I Share Pinterest Tweet Whatsapp Post navigation A1-RB/DOE Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.