Close of Business 
Collocated Operating Base 
Command Operating Budget 
Chip-on-Board 
cargo on board 
Chip On Board 
Cobra 
Contingency Operating Base 
Communications Office Building 
COMPUTER OPERATIONS BRANCH 
Coordination of Benefits 
Chairman of the Board 
Chief of the Boat 
Carry Over Bank 
Central Obrera Boliviano 
Chief of Base 
Children of Bodom 
chronic obstructive bronchitis 
Church Office Building 
cisplatin, oncovin, bleomycin 
City Of Brass 
Class of Business 
Clean-out box 
Closing of Business 
cobalamin biosynthetic 
Cobaltic Boride 
COBOL source code 
Coenzyme B 
Collated Operating Base 
Collateralized Bond Obligations