a system of classifying blood groups by a or b antibody
abnormal oocyte
Abo Akademi University
abortion
absent bed occupancy
accumulated benefit obligation
acute bowel obstruction
adiabatic Born-Oppenheimer
Admin Base Object
ADVANCED BYTE-ORIENTED
Agents of Biological Origin
Air Base Operability
Air Base Order
Air Board Order
American Board of Ophthalmology
American Board of Opticianry
American Board of Orthodontics
American Board of Orthodontists
American Board of Otolaryngology
Annular Beam Oscillator
antibody
antibonding bond orbital
Applied Benefits Option
APSA Colombia
Army Budget Office
As brokers only
Asociación de Bananeros Orenses
Assistant Boarding Officer
Astable Blocking Oscillator
Asymptotic Bounded Optimality
Audio Basic Object
Australian Brandenburg Orchestra
Automatic Beam Optimizer
Automatic Build-Out
Aviators Breathing Oxygen
Aviator's Breathing Oxygen
IATA code for Aboisso Airport, Aboisso, Ivory Coast
IATA code for Antonio Juarbe Pol Airport, Arecibo, Puerto Rico, United States