accumulated benefit obligation
Aviators Breathing Oxygen
American Board of Ophthalmology
American Board of Orthodontics
abortion
adiabatic Born-Oppenheimer
Air Base Operability
American Board of Otolaryngology
Annular Beam Oscillator
antibonding bond orbital
a system of classifying blood groups b…
abnormal oocyte
Abo Akademi University
absent bed occupancy
acute bowel obstruction
Admin Base Object
ADVANCED BYTE-ORIENTED
Agents of Biological Origin
Air Base Order
Air Board Order
American Board of Opticianry
American Board of Orthodontists
antibody
Applied Benefits Option
APSA Colombia
Army Budget Office
As brokers only
Assistant Boarding Officer
Astable Blocking Oscillator
Asymptotic Bounded Optimality