Anyone But United (Miscellaneous » Funnies)
*** Alliance Biblique Universelle (Academic & Science » Universities)
*** Atlantic Baptist University (Academic & Science » Universities)
*** Alliance Biblique Universelle (International » French)
** American Board of Urology (Medical)
* Asian- Pacific Broadcasting Union (Community » Media)
* Acceptance for Beneficial use (Medical » Laboratory)
* Application Business Unit (Business » General)
* Application Business Unit (Computing » General)
* Amphibious Beach Unit (Governmental » Military)
* Analog Back- Up (Governmental » Military)
* Analog Back- Up (Governmental » NASA)
* Analog Back- Up (Academic & Science » Electronics)
* Analog Back- Up (Governmental » US Government)
* Analog Back- Up (Computing » Security)
* Analog Back- Up (Computing » Networking)
* Analog Back- Up (Computing » Software)
* Analog Back- Up (Computing » Hardware)
* Always Bloody Useless (Miscellaneous » Funnies)
* Artificial Breeding Unit (Medical » Veterinary)
* After Body Unit (Governmental » Transportation)
* Association of Banyan Users (Computing » General)
* After Body Unit (Governmental » Military)
* After Body Unit (Governmental » NASA)
* All Buggered Up (Internet » Chat)
* Advance Base Unit (Governmental » Military)
Abbreviations dictionary. 2012.