stern. – AAA – AAA-CPA – AAA-IB – AAA-PRO – AAAAA – AAAAA – AAAAAAA – AAAAAAAA – AAAAAAAAAAA Authentication Authorization Accounting and Auditing. What does AAAA mean? — Explore the different meanings of the acronym YYYY on the Abbreviations.com website. a type of DNS record used to specify the IPv6 Internet address of a DNS name a certain size and configuration of a baseball player`s electric battery that is too good for Minor League Baseball but not good enough for Major League Baseball A slang term that screams, screams or screams either in horror, excitement, surprise, etc.. .