Office (TBD)
Conference on Optical Fiber Communication - Optical Society of America - Washington, DC (TSSD)
Corporate Office Properties Trust - NYSE symbol
Corporate Office Prop Tr SBI - NYSE symbol (SPSG)
Foleyet Community Library, Ontario - Library symbol - National Library of Canada (NLC)
High Court Reports, Orange Free State - A publication (DLA)
Occipitofrontal Circumference - Anatomy
Oceania Football Confederation
Oceanography and Fisheries Committee (ASF)
Office - or Officer (AFM)
Office of Fishery Coordination - World War II
Officer - Telegraphy (PCTE)
Off Shore Concepts Ltd., Winchester, MA - Manufacturer code for watercraft hull identification number (USCG)
Oil-Filled Cable (SAUS)
Oil Free Compressor
Oldest Finest Canadian - Whiskey (IIA)
Old Fired Copper - Initialism once used as brand name for bourbon
Old French Canadian - Initialism used in Schenley brand of Canadian whisky
One Flow Cascade Cycle (IAA)
Open Financial Connectivity - Microsoft Computer Software - Computer Science
Operational Flight Control - NASA
Opposing Force Component (MCD)
Optical Fiber Communication (CIST)
Optical Fiber Control (DCDG)
Optical Fibre Cable - Indian Railway (TIR)
Optical File Cabinet - Computer science
Optical Formatter Controller (NITA)
Optical Frequency Conversion
Orbitofacial Cleft - Medicine (STED)
Organization for Combat - Military technology (DDF)
Original Female Character
Orthonormal Function Coding (SAUS)
Oscillation Frequency Control (CIST)
Osteitis Fibrosa Cystica - Medicine (DMAA)
Outside Front Cover - Publishing (NTCM)
Overflow Card (SAUS)
Overflow Control (SAUS)
Overhead Foxhole Cover (SAUS)
Overseas Food Corp. (AD)
Oxford First Corporation (SAUS)
Oxyfuel-Gas Cutting - Welding
Oxygen-Free Copper (SAUS)
Office (AD)
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